61157401 has 2 divisors, whose sum is σ = 61157402. Its totient is φ = 61157400.

The previous prime is 61157357. The next prime is 61157431. The reversal of 61157401 is 10475116.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44355600 + 16801801 = 6660^2 + 4099^2 .

It is a cyclic number.

It is not a de Polignac number, because 61157401 - 2⁹ = 61156889 is a prime.

It is not a weakly prime, because it can be changed into another prime (61157431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30578700 + 30578701.

It is an arithmetic number, because the mean of its divisors is an integer number (30578701).

Almost surely, 2^61157401 is an apocalyptic number.

It is an amenable number.

61157401 is a deficient number, since it is larger than the sum of its proper divisors (1).

61157401 is an equidigital number, since it uses as much as digits as its factorization.

61157401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 61157401 is about 7820.3197504961. The cubic root of 61157401 is about 393.9880114366.

The spelling of 61157401 in words is "sixty-one million, one hundred fifty-seven thousand, four hundred one".