51357970 has 16 divisors (see below), whose sum is σ = 92712600. Its totient is φ = 20483584.

The previous prime is 51357949. The next prime is 51357983. The reversal of 51357970 is 7975315.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 46063369 + 5294601 = 6787^2 + 2301^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3745 + ... + 10804.

Almost surely, 2^51357970 is an apocalyptic number.

51357970 is a deficient number, since it is larger than the sum of its proper divisors (41354630).

51357970 is a wasteful number, since it uses less digits than its factorization.

51357970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14909.

The product of its (nonzero) digits is 33075, while the sum is 37.

The square root of 51357970 is about 7166.4475160291. The cubic root of 51357970 is about 371.7086061606.

The spelling of 51357970 in words is "fifty-one million, three hundred fifty-seven thousand, nine hundred seventy".