51280884 has 48 divisors (see below), whose sum is σ = 133369600. Its totient is φ = 17039808.

The previous prime is 51280847. The next prime is 51280921. The reversal of 51280884 is 48808215.

It is an interprime number because it is at equal distance from previous prime (51280847) and next prime (51280921).

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

It is a congruent 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, 48837 + ... + 49875.

Almost surely, 2^51280884 is an apocalyptic number.

51280884 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

51280884 is an abundant number, since it is smaller than the sum of its proper divisors (82088716).

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

51280884 is a wasteful number, since it uses less digits than its factorization.

51280884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509 (or 1501 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 51280884 is about 7161.0672388967. The cubic root of 51280884 is about 371.5225404116.

The spelling of 51280884 in words is "fifty-one million, two hundred eighty thousand, eight hundred eighty-four".