61332491 has 16 divisors (see below), whose sum is σ = 69070848. Its totient is φ = 53978400.

The previous prime is 61332487. The next prime is 61332493. The reversal of 61332491 is 19423316.

It is a cyclic number.

It is not a de Polignac number, because 61332491 - 2² = 61332487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61332493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59561 + ... + 60581.

It is an arithmetic number, because the mean of its divisors is an integer number (4316928).

Almost surely, 2^61332491 is an apocalyptic number.

61332491 is a deficient number, since it is larger than the sum of its proper divisors (7738357).

61332491 is a wasteful number, since it uses less digits than its factorization.

61332491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202.

The product of its digits is 3888, while the sum is 29.

The square root of 61332491 is about 7831.5063046645. The cubic root of 61332491 is about 394.3636412734.

The spelling of 61332491 in words is "sixty-one million, three hundred thirty-two thousand, four hundred ninety-one".