61429117 has 4 divisors (see below), whose sum is σ = 61492096. Its totient is φ = 61366140.

The previous prime is 61429087. The next prime is 61429127. The reversal of 61429117 is 71192416.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61429117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61429127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30003 + ... + 31984.

It is an arithmetic number, because the mean of its divisors is an integer number (15373024).

Almost surely, 2^61429117 is an apocalyptic number.

It is an amenable number.

61429117 is a deficient number, since it is larger than the sum of its proper divisors (62979).

61429117 is an equidigital number, since it uses as much as digits as its factorization.

61429117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62978.

The product of its digits is 3024, while the sum is 31.

The square root of 61429117 is about 7837.6729327014. The cubic root of 61429117 is about 394.5706320918.

The spelling of 61429117 in words is "sixty-one million, four hundred twenty-nine thousand, one hundred seventeen".