61075957 has 4 divisors (see below), whose sum is σ = 61132140. Its totient is φ = 61019776.

The previous prime is 61075933. The next prime is 61075979. The reversal of 61075957 is 75957016.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27133681 + 33942276 = 5209^2 + 5826^2 .

It is a cyclic number.

It is not a de Polignac number, because 61075957 - 2⁷ = 61075829 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 (61075057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26428 + ... + 28645.

It is an arithmetic number, because the mean of its divisors is an integer number (15283035).

Almost surely, 2^61075957 is an apocalyptic number.

It is an amenable number.

61075957 is a deficient number, since it is larger than the sum of its proper divisors (56183).

61075957 is a wasteful number, since it uses less digits than its factorization.

61075957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56182.

The product of its (nonzero) digits is 66150, while the sum is 40.

The square root of 61075957 is about 7815.1108117544. The cubic root of 61075957 is about 393.8130409855.

It can be divided in two parts, 610 and 75957, that added together give a palindrome (76567).

The spelling of 61075957 in words is "sixty-one million, seventy-five thousand, nine hundred fifty-seven".