61375831 has 8 divisors (see below), whose sum is σ = 70894224. Its totient is φ = 52513920.

The previous prime is 61375823. The next prime is 61375841. The reversal of 61375831 is 13857316.

61375831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61375831 - 2³ = 61375823 is a prime.

It is a super-2 number, since 2×61375831² = 7533985261881122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61375801) 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 7 ways as a sum of consecutive naturals, for example, 163920 + ... + 164293.

It is an arithmetic number, because the mean of its divisors is an integer number (8861778).

Almost surely, 2^61375831 is an apocalyptic number.

61375831 is a deficient number, since it is larger than the sum of its proper divisors (9518393).

61375831 is a wasteful number, since it uses less digits than its factorization.

61375831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328241.

The product of its digits is 15120, while the sum is 34.

The square root of 61375831 is about 7834.2728443679. The cubic root of 61375831 is about 394.4565104613.

The spelling of 61375831 in words is "sixty-one million, three hundred seventy-five thousand, eight hundred thirty-one".