51982554 has 32 divisors (see below), whose sum is σ = 112299264. Its totient is φ = 15946560.

The previous prime is 51982531. The next prime is 51982561. The reversal of 51982554 is 45528915.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32047 + ... + 33629.

It is an arithmetic number, because the mean of its divisors is an integer number (3509352).

Almost surely, 2^51982554 is an apocalyptic number.

51982554 is an abundant number, since it is smaller than the sum of its proper divisors (60316710).

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

51982554 is a wasteful number, since it uses less digits than its factorization.

51982554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2022.

The product of its digits is 72000, while the sum is 39.

The square root of 51982554 is about 7209.8927869976. The cubic root of 51982554 is about 373.2093690963.

The spelling of 51982554 in words is "fifty-one million, nine hundred eighty-two thousand, five hundred fifty-four".