61572583 has 4 divisors (see below), whose sum is σ = 61590928. Its totient is φ = 61554240.

The previous prime is 61572571. The next prime is 61572601. The reversal of 61572583 is 38527516.

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 61572583 - 2¹⁷ = 61441511 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 (61572503) 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, 2538 + ... + 11383.

It is an arithmetic number, because the mean of its divisors is an integer number (15397732).

Almost surely, 2^61572583 is an apocalyptic number.

61572583 is a deficient number, since it is larger than the sum of its proper divisors (18345).

61572583 is a wasteful number, since it uses less digits than its factorization.

61572583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18344.

The product of its digits is 50400, while the sum is 37.

The square root of 61572583 is about 7846.8199291178. The cubic root of 61572583 is about 394.8775628642.

The spelling of 61572583 in words is "sixty-one million, five hundred seventy-two thousand, five hundred eighty-three".