5151531 has 32 divisors (see below), whose sum is σ = 8870400. Its totient is φ = 2580480.

The previous prime is 5151521. The next prime is 5151533. The reversal of 5151531 is 1351515.

It is not a de Polignac number, because 5151531 - 2⁹ = 5151019 is a prime.

It is a super-2 number, since 2×5151531² = 53076543287922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 5151498 and 5151507.

It is not an unprimeable number, because it can be changed into a prime (5151533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6315 + ... + 7083.

It is an arithmetic number, because the mean of its divisors is an integer number (277200).

Almost surely, 2^5151531 is an apocalyptic number.

5151531 is a deficient number, since it is larger than the sum of its proper divisors (3718869).

5151531 is a wasteful number, since it uses less digits than its factorization.

5151531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819.

The product of its digits is 375, while the sum is 21.

The square root of 5151531 is about 2269.6984381190. The cubic root of 5151531 is about 172.7078611695.

The spelling of 5151531 in words is "five million, one hundred fifty-one thousand, five hundred thirty-one".