216001453 has 2 divisors, whose sum is σ = 216001454. Its totient is φ = 216001452.

The previous prime is 216001433. The next prime is 216001469. The reversal of 216001453 is 354100612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145491844 + 70509609 = 12062^2 + 8397^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216001453 is a prime.

It is a super-2 number, since 2×216001453² = 93313255396222418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216001433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108000726 + 108000727.

It is an arithmetic number, because the mean of its divisors is an integer number (108000727).

Almost surely, 2^216001453 is an apocalyptic number.

It is an amenable number.

216001453 is a deficient number, since it is larger than the sum of its proper divisors (1).

216001453 is an equidigital number, since it uses as much as digits as its factorization.

216001453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 216001453 is about 14696.9878886798. The cubic root of 216001453 is about 600.0013453674.

The spelling of 216001453 in words is "two hundred sixteen million, one thousand, four hundred fifty-three".