51573960 has 48 divisors (see below), whose sum is σ = 167616540. Its totient is φ = 13752960.

The previous prime is 51573953. The next prime is 51573979. The reversal of 51573960 is 6937515.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 49196196 + 2377764 = 7014^2 + 1542^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71271 + ... + 71990.

Almost surely, 2^51573960 is an apocalyptic number.

It is an amenable number.

51573960 is an abundant number, since it is smaller than the sum of its proper divisors (116042580).

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

51573960 is a wasteful number, since it uses less digits than its factorization.

51573960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143278 (or 143271 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 36.

The square root of 51573960 is about 7181.5012358141. The cubic root of 51573960 is about 372.2289606793.

The spelling of 51573960 in words is "fifty-one million, five hundred seventy-three thousand, nine hundred sixty".