51557074 has 8 divisors (see below), whose sum is σ = 77442480. Its totient is φ = 25742916.

The previous prime is 51557057. The next prime is 51557081. The reversal of 51557074 is 47075515.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15964 + ... + 18919.

It is an arithmetic number, because the mean of its divisors is an integer number (9680310).

Almost surely, 2^51557074 is an apocalyptic number.

51557074 is a deficient number, since it is larger than the sum of its proper divisors (25885406).

51557074 is a wasteful number, since it uses less digits than its factorization.

51557074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35624.

The product of its (nonzero) digits is 24500, while the sum is 34.

The square root of 51557074 is about 7180.3254800879. The cubic root of 51557074 is about 372.1883320085.

The spelling of 51557074 in words is "fifty-one million, five hundred fifty-seven thousand, seventy-four".