61097583 has 4 divisors (see below), whose sum is σ = 81463448. Its totient is φ = 40731720.

The previous prime is 61097567. The next prime is 61097587. The reversal of 61097583 is 38579016.

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

It is not a de Polignac number, because 61097583 - 2⁴ = 61097567 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 (61097587) 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, 10182928 + ... + 10182933.

It is an arithmetic number, because the mean of its divisors is an integer number (20365862).

Almost surely, 2^61097583 is an apocalyptic number.

61097583 is a deficient number, since it is larger than the sum of its proper divisors (20365865).

61097583 is a wasteful number, since it uses less digits than its factorization.

61097583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20365864.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 61097583 is about 7816.4942909210. The cubic root of 61097583 is about 393.8595164250.

The spelling of 61097583 in words is "sixty-one million, ninety-seven thousand, five hundred eighty-three".