61934557 has 2 divisors, whose sum is σ = 61934558. Its totient is φ = 61934556.

The previous prime is 61934531. The next prime is 61934569. The reversal of 61934557 is 75543916.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52330756 + 9603801 = 7234^2 + 3099^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61934557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61932557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30967278 + 30967279.

It is an arithmetic number, because the mean of its divisors is an integer number (30967279).

Almost surely, 2^61934557 is an apocalyptic number.

It is an amenable number.

61934557 is a deficient number, since it is larger than the sum of its proper divisors (1).

61934557 is an equidigital number, since it uses as much as digits as its factorization.

61934557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 40.

The square root of 61934557 is about 7869.8511421754. The cubic root of 61934557 is about 395.6498558673.

The spelling of 61934557 in words is "sixty-one million, nine hundred thirty-four thousand, five hundred fifty-seven".