61162857 has 48 divisors (see below), whose sum is σ = 107382912. Its totient is φ = 34058880.

The previous prime is 61162853. The next prime is 61162867. The reversal of 61162857 is 75826116.

61162857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61162857 - 2² = 61162853 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61162853) 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 47 ways as a sum of consecutive naturals, for example, 69303 + ... + 70179.

It is an arithmetic number, because the mean of its divisors is an integer number (2237144).

Almost surely, 2^61162857 is an apocalyptic number.

It is an amenable number.

61162857 is a deficient number, since it is larger than the sum of its proper divisors (46220055).

61162857 is an equidigital number, since it uses as much as digits as its factorization.

61162857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940 (or 928 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 61162857 is about 7820.6685775578. The cubic root of 61162857 is about 393.9997272967. Note that the first 3 decimals are identical.

The spelling of 61162857 in words is "sixty-one million, one hundred sixty-two thousand, eight hundred fifty-seven".