70129253 has 4 divisors (see below), whose sum is σ = 70633920. Its totient is φ = 69624588.

The previous prime is 70129243. The next prime is 70129261. The reversal of 70129253 is 35292107.

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 70129253 - 2⁸ = 70128997 is a prime.

It is a super-2 number, since 2×70129253² = 9836224252676018, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70129243) 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, 252125 + ... + 252402.

It is an arithmetic number, because the mean of its divisors is an integer number (17658480).

Almost surely, 2^70129253 is an apocalyptic number.

It is an amenable number.

70129253 is a deficient number, since it is larger than the sum of its proper divisors (504667).

70129253 is a wasteful number, since it uses less digits than its factorization.

70129253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504666.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 70129253 is about 8374.3210471058. The cubic root of 70129253 is about 412.3820351999.

The spelling of 70129253 in words is "seventy million, one hundred twenty-nine thousand, two hundred fifty-three".