61480391 has 16 divisors (see below), whose sum is σ = 72004608. Its totient is φ = 51408000.

The previous prime is 61480387. The next prime is 61480423. The reversal of 61480391 is 19308416.

It is a happy number.

It is not a de Polignac number, because 61480391 - 2² = 61480387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61480591) 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, 50591 + ... + 51791.

It is an arithmetic number, because the mean of its divisors is an integer number (4500288).

Almost surely, 2^61480391 is an apocalyptic number.

61480391 is a deficient number, since it is larger than the sum of its proper divisors (10524217).

61480391 is a wasteful number, since it uses less digits than its factorization.

61480391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 61480391 is about 7840.9432468294. The cubic root of 61480391 is about 394.6803823713.

The spelling of 61480391 in words is "sixty-one million, four hundred eighty thousand, three hundred ninety-one".