61561234 has 16 divisors (see below), whose sum is σ = 105634368. Its totient is φ = 26358192.

The previous prime is 61561231. The next prime is 61561237. The reversal of 61561234 is 43216516.

It is an interprime number because it is at equal distance from previous prime (61561231) and next prime (61561237).

It is not an unprimeable number, because it can be changed into a prime (61561231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26712 + ... + 28924.

It is an arithmetic number, because the mean of its divisors is an integer number (6602148).

Almost surely, 2^61561234 is an apocalyptic number.

61561234 is a deficient number, since it is larger than the sum of its proper divisors (44073134).

61561234 is a wasteful number, since it uses less digits than its factorization.

61561234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4209.

The product of its digits is 4320, while the sum is 28.

The square root of 61561234 is about 7846.0967365946. The cubic root of 61561234 is about 394.8533002211.

The spelling of 61561234 in words is "sixty-one million, five hundred sixty-one thousand, two hundred thirty-four".