61712154 has 48 divisors (see below), whose sum is σ = 153249408. Its totient is φ = 17581536.

The previous prime is 61712137. The next prime is 61712173. The reversal of 61712154 is 45121716.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81144 + ... + 81900.

It is an arithmetic number, because the mean of its divisors is an integer number (3192696).

Almost surely, 2^61712154 is an apocalyptic number.

61712154 is an abundant number, since it is smaller than the sum of its proper divisors (91537254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61712154 is a wasteful number, since it uses less digits than its factorization.

61712154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1419 (or 1416 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 61712154 is about 7855.7083703508. The cubic root of 61712154 is about 395.1757034911.

The spelling of 61712154 in words is "sixty-one million, seven hundred twelve thousand, one hundred fifty-four".