51390152 has 24 divisors (see below), whose sum is σ = 105914550. Its totient is φ = 23358720.

The previous prime is 51390137. The next prime is 51390161. The reversal of 51390152 is 25109315.

It can be written as a sum of positive squares in only one way, i.e., 50495236 + 894916 = 7106^2 + 946^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25577 + ... + 27512.

Almost surely, 2^51390152 is an apocalyptic number.

It is an amenable number.

51390152 is an abundant number, since it is smaller than the sum of its proper divisors (54524398).

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

51390152 is a wasteful number, since it uses less digits than its factorization.

51390152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53117 (or 53102 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 51390152 is about 7168.6924888713. The cubic root of 51390152 is about 371.7862301309.

Adding to 51390152 its reverse (25109315), we get a palindrome (76499467).

The spelling of 51390152 in words is "fifty-one million, three hundred ninety thousand, one hundred fifty-two".