58121681 has 4 divisors (see below), whose sum is σ = 59473392. Its totient is φ = 56769972.

The previous prime is 58121669. The next prime is 58121689. The reversal of 58121681 is 18612185.

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, and also an emirpimes, since its reverse is a distinct semiprime: 18612185 = 5 ⋅3722437.

It is a cyclic number.

It is not a de Polignac number, because 58121681 - 2¹⁴ = 58105297 is a prime.

It is a super-2 number, since 2×58121681² = 6756259604531522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (58121689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 675791 + ... + 675876.

It is an arithmetic number, because the mean of its divisors is an integer number (14868348).

Almost surely, 2^58121681 is an apocalyptic number.

It is an amenable number.

58121681 is a deficient number, since it is larger than the sum of its proper divisors (1351711).

58121681 is a wasteful number, since it uses less digits than its factorization.

58121681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351710.

The product of its digits is 3840, while the sum is 32.

The square root of 58121681 is about 7623.7576692862. The cubic root of 58121681 is about 387.3581716131.

The spelling of 58121681 in words is "fifty-eight million, one hundred twenty-one thousand, six hundred eighty-one".