61324157 has 2 divisors, whose sum is σ = 61324158. Its totient is φ = 61324156.

The previous prime is 61324121. The next prime is 61324189. The reversal of 61324157 is 75142316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59151481 + 2172676 = 7691^2 + 1474^2 .

It is a cyclic number.

It is not a de Polignac number, because 61324157 - 2⁸ = 61323901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61324057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30662078 + 30662079.

It is an arithmetic number, because the mean of its divisors is an integer number (30662079).

Almost surely, 2^61324157 is an apocalyptic number.

It is an amenable number.

61324157 is a deficient number, since it is larger than the sum of its proper divisors (1).

61324157 is an equidigital number, since it uses as much as digits as its factorization.

61324157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 29.

The square root of 61324157 is about 7830.9742050399. The cubic root of 61324157 is about 394.3457781180.

The spelling of 61324157 in words is "sixty-one million, three hundred twenty-four thousand, one hundred fifty-seven".