58072221 has 40 divisors (see below), whose sum is σ = 92756664. Its totient is φ = 36080640.

The previous prime is 58072193. The next prime is 58072229. The reversal of 58072221 is 12227085.

It can be written as a sum of positive squares in 4 ways, for example, as 99225 + 57972996 = 315^2 + 7614^2 .

It is not a de Polignac number, because 58072221 - 2⁷ = 58072093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (58072229) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 249121 + ... + 249353.

Almost surely, 2^58072221 is an apocalyptic number.

58072221 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

58072221 is a deficient number, since it is larger than the sum of its proper divisors (34684443).

58072221 is a wasteful number, since it uses less digits than its factorization.

58072221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443 (or 434 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 58072221 is about 7620.5131716965. The cubic root of 58072221 is about 387.2482632740.

The spelling of 58072221 in words is "fifty-eight million, seventy-two thousand, two hundred twenty-one".