70132257 has 16 divisors (see below), whose sum is σ = 111892480. Its totient is φ = 43158096.

The previous prime is 70132253. The next prime is 70132273. The reversal of 70132257 is 75223107.

It is not a de Polignac number, because 70132257 - 2² = 70132253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 70132257.

It is not an unprimeable number, because it can be changed into a prime (70132253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99553 + ... + 100254.

It is an arithmetic number, because the mean of its divisors is an integer number (6993280).

Almost surely, 2^70132257 is an apocalyptic number.

It is an amenable number.

70132257 is a deficient number, since it is larger than the sum of its proper divisors (41760223).

70132257 is a wasteful number, since it uses less digits than its factorization.

70132257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199829 (or 199823 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 70132257 is about 8374.5004030091. The cubic root of 70132257 is about 412.3879232704.

The spelling of 70132257 in words is "seventy million, one hundred thirty-two thousand, two hundred fifty-seven".