61551742 has 24 divisors (see below), whose sum is σ = 110028240. Its totient is φ = 25734240.

The previous prime is 61551733. The next prime is 61551769. The reversal of 61551742 is 24715516.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3642 + ... + 11677.

It is an arithmetic number, because the mean of its divisors is an integer number (4584510).

Almost surely, 2^61551742 is an apocalyptic number.

61551742 is a deficient number, since it is larger than the sum of its proper divisors (48476498).

61551742 is a wasteful number, since it uses less digits than its factorization.

61551742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15376 (or 15369 counting only the distinct ones).

The product of its digits is 8400, while the sum is 31.

The square root of 61551742 is about 7845.4918265205. The cubic root of 61551742 is about 394.8330053053.

The spelling of 61551742 in words is "sixty-one million, five hundred fifty-one thousand, seven hundred forty-two".