51864354 has 32 divisors (see below), whose sum is σ = 119232000. Its totient is φ = 16691472.

The previous prime is 51864347. The next prime is 51864361. The reversal of 51864354 is 45346815.

It is a happy number.

51864354 is a `hidden beast` number, since 5 + 1 + 8 + 643 + 5 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (51864347) and next prime (51864361).

It is a super-2 number, since 2×51864354² = 5379822431674632, which contains 22 as substring.

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, 14994 + ... + 18125.

It is an arithmetic number, because the mean of its divisors is an integer number (3726000).

Almost surely, 2^51864354 is an apocalyptic number.

51864354 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

51864354 is an abundant number, since it is smaller than the sum of its proper divisors (67367646).

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

51864354 is a wasteful number, since it uses less digits than its factorization.

51864354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33159 (or 33153 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 51864354 is about 7201.6910514129. The cubic root of 51864354 is about 372.9262816506.

The spelling of 51864354 in words is "fifty-one million, eight hundred sixty-four thousand, three hundred fifty-four".