61457156 has 6 divisors (see below), whose sum is σ = 107550030. Its totient is φ = 30728576.

The previous prime is 61457147. The next prime is 61457161. The reversal of 61457156 is 65175416.

It can be written as a sum of positive squares in only one way, i.e., 58767556 + 2689600 = 7666^2 + 1640^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 7682141 + ... + 7682148.

It is an arithmetic number, because the mean of its divisors is an integer number (17925005).

Almost surely, 2^61457156 is an apocalyptic number.

It is an amenable number.

61457156 is a deficient number, since it is larger than the sum of its proper divisors (46092874).

61457156 is a wasteful number, since it uses less digits than its factorization.

61457156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15364293 (or 15364291 counting only the distinct ones).

The product of its digits is 25200, while the sum is 35.

The square root of 61457156 is about 7839.4614610954. The cubic root of 61457156 is about 394.6306561957.

The spelling of 61457156 in words is "sixty-one million, four hundred fifty-seven thousand, one hundred fifty-six".