61555252 has 24 divisors (see below), whose sum is σ = 117829152. Its totient is φ = 27904800.

The previous prime is 61555237. The next prime is 61555253. The reversal of 61555252 is 25255516.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61555253) 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, 16863 + ... + 20185.

It is an arithmetic number, because the mean of its divisors is an integer number (4909548).

Almost surely, 2^61555252 is an apocalyptic number.

It is an amenable number.

61555252 is a deficient number, since it is larger than the sum of its proper divisors (56273900).

61555252 is a wasteful number, since it uses less digits than its factorization.

61555252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3759 (or 3757 counting only the distinct ones).

The product of its digits is 15000, while the sum is 31.

The square root of 61555252 is about 7845.7155186764. The cubic root of 61555252 is about 394.8405103055.

The spelling of 61555252 in words is "sixty-one million, five hundred fifty-five thousand, two hundred fifty-two".