51480590 has 32 divisors (see below), whose sum is σ = 112135104. Its totient is φ = 16611840.

The previous prime is 51480577. The next prime is 51480599. The reversal of 51480590 is 9508415.

It is a super-2 number, since 2×51480590² = 5300502293496200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51480599) 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, 20441 + ... + 22820.

It is an arithmetic number, because the mean of its divisors is an integer number (3504222).

Almost surely, 2^51480590 is an apocalyptic number.

51480590 is an abundant number, since it is smaller than the sum of its proper divisors (60654514).

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

51480590 is a wasteful number, since it uses less digits than its factorization.

51480590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43292.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 51480590 is about 7174.9975609752. The cubic root of 51480590 is about 372.0041960062.

The spelling of 51480590 in words is "fifty-one million, four hundred eighty thousand, five hundred ninety".