61149401 has 2 divisors, whose sum is σ = 61149402. Its totient is φ = 61149400.

The previous prime is 61149379. The next prime is 61149421. The reversal of 61149401 is 10494116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59521225 + 1628176 = 7715^2 + 1276^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61149401 is a prime.

It is not a weakly prime, because it can be changed into another prime (61149421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30574700 + 30574701.

It is an arithmetic number, because the mean of its divisors is an integer number (30574701).

Almost surely, 2^61149401 is an apocalyptic number.

It is an amenable number.

61149401 is a deficient number, since it is larger than the sum of its proper divisors (1).

61149401 is an equidigital number, since it uses as much as digits as its factorization.

61149401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 61149401 is about 7819.8082457308. The cubic root of 61149401 is about 393.9708314961.

The spelling of 61149401 in words is "sixty-one million, one hundred forty-nine thousand, four hundred one".