61614557 has 2 divisors, whose sum is σ = 61614558. Its totient is φ = 61614556.

The previous prime is 61614547. The next prime is 61614569. The reversal of 61614557 is 75541616.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49266361 + 12348196 = 7019^2 + 3514^2 .

It is a cyclic number.

It is not a de Polignac number, because 61614557 - 2⁴ = 61614541 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61614547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30807278 + 30807279.

It is an arithmetic number, because the mean of its divisors is an integer number (30807279).

Almost surely, 2^61614557 is an apocalyptic number.

It is an amenable number.

61614557 is a deficient number, since it is larger than the sum of its proper divisors (1).

61614557 is an equidigital number, since it uses as much as digits as its factorization.

61614557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 35.

The square root of 61614557 is about 7849.4940601290. The cubic root of 61614557 is about 394.9672717636.

The spelling of 61614557 in words is "sixty-one million, six hundred fourteen thousand, five hundred fifty-seven".