58400221 has 4 divisors (see below), whose sum is σ = 63709344. Its totient is φ = 53091100.

The previous prime is 58400213. The next prime is 58400227. The reversal of 58400221 is 12200485.

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 58400221 - 2³ = 58400213 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 58400192 and 58400201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (58400227) 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, 2654545 + ... + 2654566.

It is an arithmetic number, because the mean of its divisors is an integer number (15927336).

Almost surely, 2^58400221 is an apocalyptic number.

It is an amenable number.

58400221 is a deficient number, since it is larger than the sum of its proper divisors (5309123).

58400221 is a wasteful number, since it uses less digits than its factorization.

58400221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5309122.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 58400221 is about 7642.0037293893. The cubic root of 58400221 is about 387.9759723137.

The spelling of 58400221 in words is "fifty-eight million, four hundred thousand, two hundred twenty-one".