61081479 has 16 divisors (see below), whose sum is σ = 91052800. Its totient is φ = 40468248.

The previous prime is 61081477. The next prime is 61081483. The reversal of 61081479 is 97418016.

It is not a de Polignac number, because 61081479 - 2¹ = 61081477 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 (61081477) 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, 2539 + ... + 11340.

It is an arithmetic number, because the mean of its divisors is an integer number (5690800).

Almost surely, 2^61081479 is an apocalyptic number.

61081479 is a deficient number, since it is larger than the sum of its proper divisors (29971321).

61081479 is a wasteful number, since it uses less digits than its factorization.

61081479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14051 (or 14045 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 61081479 is about 7815.4640937055. The cubic root of 61081479 is about 393.8249091040.

The spelling of 61081479 in words is "sixty-one million, eighty-one thousand, four hundred seventy-nine".