61157816 has 16 divisors (see below), whose sum is σ = 114836400. Its totient is φ = 30534784.

The previous prime is 61157797. The next prime is 61157843. The reversal of 61157816 is 61875116.

61157816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 800 + ... + 11088.

It is an arithmetic number, because the mean of its divisors is an integer number (7177275).

Almost surely, 2^61157816 is an apocalyptic number.

It is an amenable number.

61157816 is a deficient number, since it is larger than the sum of its proper divisors (53678584).

61157816 is a wasteful number, since it uses less digits than its factorization.

61157816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11038 (or 11034 counting only the distinct ones).

The product of its digits is 10080, while the sum is 35.

The square root of 61157816 is about 7820.3462838931. The cubic root of 61157816 is about 393.9889026051.

It can be divided in two parts, 6115 and 7816, that added together give a palindrome (13931).

The spelling of 61157816 in words is "sixty-one million, one hundred fifty-seven thousand, eight hundred sixteen".