61058531 has 2 divisors, whose sum is σ = 61058532. Its totient is φ = 61058530.

The previous prime is 61058521. The next prime is 61058653. The reversal of 61058531 is 13585016.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61058531 - 2¹⁸ = 60796387 is a prime.

It is a super-2 number, since 2×61058531² = 7456288415755922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 61058494 and 61058503.

It is not a weakly prime, because it can be changed into another prime (61058521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30529265 + 30529266.

It is an arithmetic number, because the mean of its divisors is an integer number (30529266).

Almost surely, 2^61058531 is an apocalyptic number.

61058531 is a deficient number, since it is larger than the sum of its proper divisors (1).

61058531 is an equidigital number, since it uses as much as digits as its factorization.

61058531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 61058531 is about 7813.9958407975. The cubic root of 61058531 is about 393.7755835901.

The spelling of 61058531 in words is "sixty-one million, fifty-eight thousand, five hundred thirty-one".