51464502 has 48 divisors (see below), whose sum is σ = 121446000. Its totient is φ = 15688512.

The previous prime is 51464467. The next prime is 51464503. The reversal of 51464502 is 20546415.

51464502 is a `hidden beast` number, since 5 + 14 + 645 + 0 + 2 = 666.

It is a super-2 number, since 2×51464502² = 5297189932216008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51464503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7324 + ... + 12512.

It is an arithmetic number, because the mean of its divisors is an integer number (2530125).

Almost surely, 2^51464502 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51464502, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60723000).

51464502 is an abundant number, since it is smaller than the sum of its proper divisors (69981498).

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

51464502 is a wasteful number, since it uses less digits than its factorization.

51464502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5245 (or 5242 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 51464502 is about 7173.8763580090. The cubic root of 51464502 is about 371.9654407715.

The spelling of 51464502 in words is "fifty-one million, four hundred sixty-four thousand, five hundred two".