51978410 has 32 divisors (see below), whose sum is σ = 103809600. Its totient is φ = 18578560.

The previous prime is 51978397. The next prime is 51978419. The reversal of 51978410 is 1487915.

It is a super-2 number, since 2×51978410² = 5403510212256200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51978419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2486 + ... + 10494.

It is an arithmetic number, because the mean of its divisors is an integer number (3244050).

Almost surely, 2^51978410 is an apocalyptic number.

51978410 is a deficient number, since it is larger than the sum of its proper divisors (51831190).

51978410 is a wasteful number, since it uses less digits than its factorization.

51978410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8086.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 51978410 is about 7209.6053983557. The cubic root of 51978410 is about 373.1994515335.

The spelling of 51978410 in words is "fifty-one million, nine hundred seventy-eight thousand, four hundred ten".