61345129 has 16 divisors (see below), whose sum is σ = 68731200. Its totient is φ = 54411264.

The previous prime is 61345103. The next prime is 61345139. The reversal of 61345129 is 92154316.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61345129 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61345129.

It is not an unprimeable number, because it can be changed into a prime (61345139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82642 + ... + 83380.

It is an arithmetic number, because the mean of its divisors is an integer number (4295700).

Almost surely, 2^61345129 is an apocalyptic number.

It is an amenable number.

61345129 is a deficient number, since it is larger than the sum of its proper divisors (7386071).

61345129 is a wasteful number, since it uses less digits than its factorization.

61345129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032.

The product of its digits is 6480, while the sum is 31.

The square root of 61345129 is about 7832.3131321469. The cubic root of 61345129 is about 394.3907265661.

The spelling of 61345129 in words is "sixty-one million, three hundred forty-five thousand, one hundred twenty-nine".