61602157 has 2 divisors, whose sum is σ = 61602158. Its totient is φ = 61602156.

The previous prime is 61602143. The next prime is 61602197. The reversal of 61602157 is 75120616.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55145476 + 6456681 = 7426^2 + 2541^2 .

It is a cyclic number.

It is not a de Polignac number, because 61602157 - 2⁷ = 61602029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61602197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30801078 + 30801079.

It is an arithmetic number, because the mean of its divisors is an integer number (30801079).

Almost surely, 2^61602157 is an apocalyptic number.

It is an amenable number.

61602157 is a deficient number, since it is larger than the sum of its proper divisors (1).

61602157 is an equidigital number, since it uses as much as digits as its factorization.

61602157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 61602157 is about 7848.7041605605. The cubic root of 61602157 is about 394.9407741144.

The spelling of 61602157 in words is "sixty-one million, six hundred two thousand, one hundred fifty-seven".