61125554 has 32 divisors (see below), whose sum is σ = 108345600. Its totient is φ = 25316928.

The previous prime is 61125511. The next prime is 61125563. The reversal of 61125554 is 45552116.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101747 + ... + 102345.

It is an arithmetic number, because the mean of its divisors is an integer number (3385800).

Almost surely, 2^61125554 is an apocalyptic number.

61125554 is a deficient number, since it is larger than the sum of its proper divisors (47220046).

61125554 is a wasteful number, since it uses less digits than its factorization.

61125554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842.

The product of its digits is 6000, while the sum is 29.

The square root of 61125554 is about 7818.2833154088. The cubic root of 61125554 is about 393.9196113488.

The spelling of 61125554 in words is "sixty-one million, one hundred twenty-five thousand, five hundred fifty-four".