61423577 has 4 divisors (see below), whose sum is σ = 61714896. Its totient is φ = 61132260.

The previous prime is 61423573. The next prime is 61423597. The reversal of 61423577 is 77532416.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61423577 - 2² = 61423573 is a prime.

It is a super-2 number, since 2×61423577² = 7545711622949858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61423573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145343 + ... + 145764.

It is an arithmetic number, because the mean of its divisors is an integer number (15428724).

Almost surely, 2^61423577 is an apocalyptic number.

It is an amenable number.

61423577 is a deficient number, since it is larger than the sum of its proper divisors (291319).

61423577 is a wasteful number, since it uses less digits than its factorization.

61423577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291318.

The product of its digits is 35280, while the sum is 35.

The square root of 61423577 is about 7837.3195035037. The cubic root of 61423577 is about 394.5587702520.

The spelling of 61423577 in words is "sixty-one million, four hundred twenty-three thousand, five hundred seventy-seven".