61527931 has 2 divisors, whose sum is σ = 61527932. Its totient is φ = 61527930.

The previous prime is 61527919. The next prime is 61527941. The reversal of 61527931 is 13972516.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61527931 - 2⁷ = 61527803 is a prime.

It is a super-2 number, since 2×61527931² = 7571372586281522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61527941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30763965 + 30763966.

It is an arithmetic number, because the mean of its divisors is an integer number (30763966).

Almost surely, 2^61527931 is an apocalyptic number.

61527931 is a deficient number, since it is larger than the sum of its proper divisors (1).

61527931 is an equidigital number, since it uses as much as digits as its factorization.

61527931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11340, while the sum is 34.

The square root of 61527931 is about 7843.9741840473. The cubic root of 61527931 is about 394.7820856458.

The spelling of 61527931 in words is "sixty-one million, five hundred twenty-seven thousand, nine hundred thirty-one".