51803572 has 12 divisors (see below), whose sum is σ = 90967716. Its totient is φ = 25812800.

The previous prime is 51803527. The next prime is 51803597. The reversal of 51803572 is 27530815.

It can be written as a sum of positive squares in 2 ways, for example, as 30514576 + 21288996 = 5524^2 + 4614^2 .

It is a super-2 number, since 2×51803572² = 5367220143918368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20929 + ... + 23272.

It is an arithmetic number, because the mean of its divisors is an integer number (7580643).

Almost surely, 2^51803572 is an apocalyptic number.

It is an amenable number.

51803572 is a deficient number, since it is larger than the sum of its proper divisors (39164144).

51803572 is a wasteful number, since it uses less digits than its factorization.

51803572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44498 (or 44496 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 51803572 is about 7197.4698332122. The cubic root of 51803572 is about 372.7805420809.

The spelling of 51803572 in words is "fifty-one million, eight hundred three thousand, five hundred seventy-two".