61845135 has 16 divisors (see below), whose sum is σ = 107948160. Its totient is φ = 29985440.

The previous prime is 61845107. The next prime is 61845151. The reversal of 61845135 is 53154816.

It is not a de Polignac number, because 61845135 - 2⁵ = 61845103 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 61845096 and 61845105.

It is a congruent 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, 187245 + ... + 187574.

It is an arithmetic number, because the mean of its divisors is an integer number (6746760).

Almost surely, 2^61845135 is an apocalyptic number.

61845135 is a deficient number, since it is larger than the sum of its proper divisors (46103025).

61845135 is a wasteful number, since it uses less digits than its factorization.

61845135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374838.

The product of its digits is 14400, while the sum is 33.

The square root of 61845135 is about 7864.1677881388. The cubic root of 61845135 is about 395.4593491772.

It can be divided in two parts, 618 and 45135, that added together give a triangular number (45753 = T₃₀₂).

The spelling of 61845135 in words is "sixty-one million, eight hundred forty-five thousand, one hundred thirty-five".