61532887 has 16 divisors (see below), whose sum is σ = 71649760. Its totient is φ = 52348032.

The previous prime is 61532881. The next prime is 61532899. The reversal of 61532887 is 78823516.

It is a cyclic number.

It is not a de Polignac number, because 61532887 - 2³ = 61532879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61532881) 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 15 ways as a sum of consecutive naturals, for example, 5773 + ... + 12505.

It is an arithmetic number, because the mean of its divisors is an integer number (4478110).

Almost surely, 2^61532887 is an apocalyptic number.

61532887 is a deficient number, since it is larger than the sum of its proper divisors (10116873).

61532887 is a wasteful number, since it uses less digits than its factorization.

61532887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6802.

The product of its digits is 80640, while the sum is 40.

The square root of 61532887 is about 7844.2900889755. The cubic root of 61532887 is about 394.7926851001.

The spelling of 61532887 in words is "sixty-one million, five hundred thirty-two thousand, eight hundred eighty-seven".