58551981 has 8 divisors (see below), whose sum is σ = 78105984. Its totient is φ = 39016320.

The previous prime is 58551979. The next prime is 58551991. The reversal of 58551981 is 18915585.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 58551981 - 2¹ = 58551979 is a prime.

It is a super-2 number, since 2×58551981² = 6856668958048722, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (58551931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7180 + ... + 12986.

It is an arithmetic number, because the mean of its divisors is an integer number (9763248).

Almost surely, 2^58551981 is an apocalyptic number.

It is an amenable number.

58551981 is a deficient number, since it is larger than the sum of its proper divisors (19554003).

58551981 is a wasteful number, since it uses less digits than its factorization.

58551981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9171.

The product of its digits is 72000, while the sum is 42.

The square root of 58551981 is about 7651.9266201395. The cubic root of 58551981 is about 388.3117490423.

The spelling of 58551981 in words is "fifty-eight million, five hundred fifty-one thousand, nine hundred eighty-one".