72182531 has 2 divisors, whose sum is σ = 72182532. Its totient is φ = 72182530.

The previous prime is 72182519. The next prime is 72182543. The reversal of 72182531 is 13528127.

It is a balanced prime because it is at equal distance from previous prime (72182519) and next prime (72182543).

It is a cyclic number.

It is not a de Polignac number, because 72182531 - 2²² = 67988227 is a prime.

It is a super-2 number, since 2×72182531² = 10420635563131922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 72182494 and 72182503.

It is not a weakly prime, because it can be changed into another prime (72184531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36091265 + 36091266.

It is an arithmetic number, because the mean of its divisors is an integer number (36091266).

Almost surely, 2^72182531 is an apocalyptic number.

72182531 is a deficient number, since it is larger than the sum of its proper divisors (1).

72182531 is an equidigital number, since it uses as much as digits as its factorization.

72182531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 29.

The square root of 72182531 is about 8496.0303083264. The cubic root of 72182531 is about 416.3680232980.

The spelling of 72182531 in words is "seventy-two million, one hundred eighty-two thousand, five hundred thirty-one".