61577475 has 24 divisors (see below), whose sum is σ = 102136320. Its totient is φ = 32735520.

The previous prime is 61577437. The next prime is 61577513. The reversal of 61577475 is 57477516.

61577475 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61577437) and next prime (61577513).

It is not a de Polignac number, because 61577475 - 2¹⁶ = 61511939 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 25782 + ... + 28068.

It is an arithmetic number, because the mean of its divisors is an integer number (4255680).

Almost surely, 2^61577475 is an apocalyptic number.

61577475 is a deficient number, since it is larger than the sum of its proper divisors (40558845).

61577475 is a wasteful number, since it uses less digits than its factorization.

61577475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2659 (or 2654 counting only the distinct ones).

The product of its digits is 205800, while the sum is 42.

The square root of 61577475 is about 7847.1316415618. The cubic root of 61577475 is about 394.8880203860. Note that the first 3 decimals are identical.

The spelling of 61577475 in words is "sixty-one million, five hundred seventy-seven thousand, four hundred seventy-five".