61157776 has 40 divisors (see below), whose sum is σ = 120929760. Its totient is φ = 29958144.

The previous prime is 61157753. The next prime is 61157779. The reversal of 61157776 is 67775116.

It is not an unprimeable number, because it can be changed into a prime (61157779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237840 + ... + 238096.

It is an arithmetic number, because the mean of its divisors is an integer number (3023244).

Almost surely, 2^61157776 is an apocalyptic number.

It is an amenable number.

61157776 is a deficient number, since it is larger than the sum of its proper divisors (59771984).

61157776 is a wasteful number, since it uses less digits than its factorization.

61157776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511 (or 505 counting only the distinct ones).

The product of its digits is 61740, while the sum is 40.

The square root of 61157776 is about 7820.3437264611. The cubic root of 61157776 is about 393.9888167096.

The spelling of 61157776 in words is "sixty-one million, one hundred fifty-seven thousand, seven hundred seventy-six".