51157294 has 4 divisors (see below), whose sum is σ = 76735944. Its totient is φ = 25578646.

The previous prime is 51157283. The next prime is 51157339. The reversal of 51157294 is 49275115.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12789322 + ... + 12789325.

It is an arithmetic number, because the mean of its divisors is an integer number (19183986).

Almost surely, 2^51157294 is an apocalyptic number.

51157294 is a deficient number, since it is larger than the sum of its proper divisors (25578650).

51157294 is a wasteful number, since it uses less digits than its factorization.

51157294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25578649.

The product of its digits is 12600, while the sum is 34.

The square root of 51157294 is about 7152.4327329937. The cubic root of 51157294 is about 371.2238364645.

The spelling of 51157294 in words is "fifty-one million, one hundred fifty-seven thousand, two hundred ninety-four".