61881475 has 12 divisors (see below), whose sum is σ = 78182496. Its totient is φ = 48570080.

The previous prime is 61881451. The next prime is 61881481. The reversal of 61881475 is 57418816.

It is not a de Polignac number, because 61881475 - 2⁹ = 61880963 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22027 + ... + 24676.

It is an arithmetic number, because the mean of its divisors is an integer number (6515208).

Almost surely, 2^61881475 is an apocalyptic number.

61881475 is a deficient number, since it is larger than the sum of its proper divisors (16301021).

61881475 is a wasteful number, since it uses less digits than its factorization.

61881475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46766 (or 46761 counting only the distinct ones).

The product of its digits is 53760, while the sum is 40.

The square root of 61881475 is about 7866.4779285268. The cubic root of 61881475 is about 395.5367908864.

The spelling of 61881475 in words is "sixty-one million, eight hundred eighty-one thousand, four hundred seventy-five".