254221151551 has 2 divisors, whose sum is σ = 254221151552. Its totient is φ = 254221151550.

The previous prime is 254221151539. The next prime is 254221151593. The reversal of 254221151551 is 155151122452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 254221151551 - 2⁷ = 254221151423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254221157551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127110575775 + 127110575776.

It is an arithmetic number, because the mean of its divisors is an integer number (127110575776).

Almost surely, 2^254221151551 is an apocalyptic number.

254221151551 is a deficient number, since it is larger than the sum of its proper divisors (1).

254221151551 is an equidigital number, since it uses as much as digits as its factorization.

254221151551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20000, while the sum is 34.

The spelling of 254221151551 in words is "two hundred fifty-four billion, two hundred twenty-one million, one hundred fifty-one thousand, five hundred fifty-one".