61357149 has 16 divisors (see below), whose sum is σ = 103885440. Its totient is φ = 35061120.

The previous prime is 61357067. The next prime is 61357151. The reversal of 61357149 is 94175316.

It is not a de Polignac number, because 61357149 - 2¹² = 61353053 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61357159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162132 + ... + 162509.

It is an arithmetic number, because the mean of its divisors is an integer number (6492840).

Almost surely, 2^61357149 is an apocalyptic number.

It is an amenable number.

61357149 is a deficient number, since it is larger than the sum of its proper divisors (42528291).

61357149 is a wasteful number, since it uses less digits than its factorization.

61357149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324657 (or 324651 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 61357149 is about 7833.0804285415. The cubic root of 61357149 is about 394.4164839328.

The spelling of 61357149 in words is "sixty-one million, three hundred fifty-seven thousand, one hundred forty-nine".