61156461 has 24 divisors (see below), whose sum is σ = 85295392. Its totient is φ = 38966400.

The previous prime is 61156457. The next prime is 61156477. The reversal of 61156461 is 16465116.

It is not a de Polignac number, because 61156461 - 2² = 61156457 is a prime.

It is a super-2 number, since 2×61156461² = 7480225444089042, 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 (61156411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 337791 + ... + 337971.

Almost surely, 2^61156461 is an apocalyptic number.

It is an amenable number.

61156461 is a deficient number, since it is larger than the sum of its proper divisors (24138931).

61156461 is a wasteful number, since it uses less digits than its factorization.

61156461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333 (or 292 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 61156461 is about 7820.2596504208. The cubic root of 61156461 is about 393.9859928713.

The spelling of 61156461 in words is "sixty-one million, one hundred fifty-six thousand, four hundred sixty-one".