61751957 has 16 divisors (see below), whose sum is σ = 66585600. Its totient is φ = 57095280.

The previous prime is 61751953. The next prime is 61751983. The reversal of 61751957 is 75915716.

61751957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 61751957 - 2² = 61751953 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61751953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 227732 + ... + 228002.

It is an arithmetic number, because the mean of its divisors is an integer number (4161600).

Almost surely, 2^61751957 is an apocalyptic number.

61751957 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

61751957 is a deficient number, since it is larger than the sum of its proper divisors (4833643).

61751957 is a wasteful number, since it uses less digits than its factorization.

61751957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536.

The product of its digits is 66150, while the sum is 41.

The square root of 61751957 is about 7858.2413426924. The cubic root of 61751957 is about 395.2606451493.

The spelling of 61751957 in words is "sixty-one million, seven hundred fifty-one thousand, nine hundred fifty-seven".