70553 has 4 divisors (see below), whose sum is σ = 80640. Its totient is φ = 60468.

The previous prime is 70549. The next prime is 70571. The reversal of 70553 is 35507.

70553 is nontrivially palindromic in base 13.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 70553 - 2² = 70549 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (70573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5033 + ... + 5046.

It is an arithmetic number, because the mean of its divisors is an integer number (20160).

2⁷⁰⁵⁵³ is an apocalyptic number.

It is an amenable number.

70553 is a deficient number, since it is larger than the sum of its proper divisors (10087).

70553 is a wasteful number, since it uses less digits than its factorization.

70553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10086.

The product of its (nonzero) digits is 525, while the sum is 20.

The square root of 70553 is about 265.6181469704. The cubic root of 70553 is about 41.3210956371.

The spelling of 70553 in words is "seventy thousand, five hundred fifty-three".