51574464 has 168 divisors, whose sum is σ = 164043360. Its totient is φ = 15409152.

The previous prime is 51574451. The next prime is 51574477. The reversal of 51574464 is 46447515.

It is an interprime number because it is at equal distance from previous prime (51574451) and next prime (51574477).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 225102 + ... + 225330.

Almost surely, 2^51574464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51574464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82021680).

51574464 is an abundant number, since it is smaller than the sum of its proper divisors (112468896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51574464 is a wasteful number, since it uses less digits than its factorization.

51574464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287 (or 274 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 51574464 is about 7181.5363258846. The cubic root of 51574464 is about 372.2301731955.

The spelling of 51574464 in words is "fifty-one million, five hundred seventy-four thousand, four hundred sixty-four".