58201561 has 4 divisors (see below), whose sum is σ = 63492624. Its totient is φ = 52910500.

The previous prime is 58201543. The next prime is 58201571. The reversal of 58201561 is 16510285.

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 not a de Polignac number, because 58201561 - 2¹⁵ = 58168793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (58201571) 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, 2645515 + ... + 2645536.

It is an arithmetic number, because the mean of its divisors is an integer number (15873156).

Almost surely, 2^58201561 is an apocalyptic number.

It is an amenable number.

58201561 is a deficient number, since it is larger than the sum of its proper divisors (5291063).

58201561 is a wasteful number, since it uses less digits than its factorization.

58201561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5291062.

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 58201561 is about 7628.9947568471. The cubic root of 58201561 is about 387.5355466524.

It can be divided in two parts, 5820 and 1561, that added together give a triangular number (7381 = T₁₂₁).

The spelling of 58201561 in words is "fifty-eight million, two hundred one thousand, five hundred sixty-one".