70038251 has 4 divisors (see below), whose sum is σ = 71225400. Its totient is φ = 68851104.

The previous prime is 70038247. The next prime is 70038257. The reversal of 70038251 is 15283007.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70038251 - 2² = 70038247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70038251.

It is not an unprimeable number, because it can be changed into a prime (70038257) 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, 593486 + ... + 593603.

It is an arithmetic number, because the mean of its divisors is an integer number (17806350).

Almost surely, 2^70038251 is an apocalyptic number.

70038251 is a deficient number, since it is larger than the sum of its proper divisors (1187149).

70038251 is a wasteful number, since it uses less digits than its factorization.

70038251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1187148.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 70038251 is about 8368.8858876197. The cubic root of 70038251 is about 412.2035845420.

The spelling of 70038251 in words is "seventy million, thirty-eight thousand, two hundred fifty-one".