61396157 has 2 divisors, whose sum is σ = 61396158. Its totient is φ = 61396156.

The previous prime is 61396141. The next prime is 61396169. The reversal of 61396157 is 75169316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61058596 + 337561 = 7814^2 + 581^2 .

It is a cyclic number.

It is not a de Polignac number, because 61396157 - 2⁴ = 61396141 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61396157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61395157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30698078 + 30698079.

It is an arithmetic number, because the mean of its divisors is an integer number (30698079).

Almost surely, 2^61396157 is an apocalyptic number.

It is an amenable number.

61396157 is a deficient number, since it is larger than the sum of its proper divisors (1).

61396157 is an equidigital number, since it uses as much as digits as its factorization.

61396157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 38.

The square root of 61396157 is about 7835.5699856488. The cubic root of 61396157 is about 394.5000500652.

The spelling of 61396157 in words is "sixty-one million, three hundred ninety-six thousand, one hundred fifty-seven".