61184491 has 4 divisors (see below), whose sum is σ = 61203184. Its totient is φ = 61165800.

The previous prime is 61184489. The next prime is 61184507. The reversal of 61184491 is 19448116.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61184491 - 2¹ = 61184489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61184401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3000 + ... + 11461.

It is an arithmetic number, because the mean of its divisors is an integer number (15300796).

Almost surely, 2^61184491 is an apocalyptic number.

61184491 is a deficient number, since it is larger than the sum of its proper divisors (18693).

61184491 is a wasteful number, since it uses less digits than its factorization.

61184491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18692.

The product of its digits is 6912, while the sum is 34.

The square root of 61184491 is about 7822.0515851022. The cubic root of 61184491 is about 394.0461758862.

It can be divided in two parts, 6118 and 4491, that added together give a square (10609 = 103²).

The spelling of 61184491 in words is "sixty-one million, one hundred eighty-four thousand, four hundred ninety-one".