61508135 has 16 divisors (see below), whose sum is σ = 79915584. Its totient is φ = 45176832.

The previous prime is 61508131. The next prime is 61508137. The reversal of 61508135 is 53180516.

61508135 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 61508135 - 2² = 61508131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61508098 and 61508107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61508131) 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, 10094 + ... + 14996.

It is an arithmetic number, because the mean of its divisors is an integer number (4994724).

Almost surely, 2^61508135 is an apocalyptic number.

61508135 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

61508135 is a deficient number, since it is larger than the sum of its proper divisors (18407449).

61508135 is a wasteful number, since it uses less digits than its factorization.

61508135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5114.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 61508135 is about 7842.7122221844. The cubic root of 61508135 is about 394.7397420341.

The spelling of 61508135 in words is "sixty-one million, five hundred eight thousand, one hundred thirty-five".