61353959 has 4 divisors (see below), whose sum is σ = 61521504. Its totient is φ = 61186416.

The previous prime is 61353899. The next prime is 61353961. The reversal of 61353959 is 95935316.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61353959 - 2⁸ = 61353703 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 (61353979) 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, 83222 + ... + 83955.

It is an arithmetic number, because the mean of its divisors is an integer number (15380376).

Almost surely, 2^61353959 is an apocalyptic number.

61353959 is a deficient number, since it is larger than the sum of its proper divisors (167545).

61353959 is a wasteful number, since it uses less digits than its factorization.

61353959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167544.

The product of its digits is 109350, while the sum is 41.

The square root of 61353959 is about 7832.8768022994. The cubic root of 61353959 is about 394.4096484871.

The spelling of 61353959 in words is "sixty-one million, three hundred fifty-three thousand, nine hundred fifty-nine".