61555395 has 16 divisors (see below), whose sum is σ = 107442432. Its totient is φ = 29844960.

The previous prime is 61555393. The next prime is 61555399. The reversal of 61555395 is 59355516.

61555395 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61555395 - 2¹ = 61555393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61555393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186367 + ... + 186696.

It is an arithmetic number, because the mean of its divisors is an integer number (6715152).

Almost surely, 2^61555395 is an apocalyptic number.

61555395 is a deficient number, since it is larger than the sum of its proper divisors (45887037).

61555395 is a wasteful number, since it uses less digits than its factorization.

61555395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373082.

The product of its digits is 101250, while the sum is 39.

The square root of 61555395 is about 7845.7246319253. The cubic root of 61555395 is about 394.8408160587.

The spelling of 61555395 in words is "sixty-one million, five hundred fifty-five thousand, three hundred ninety-five".