152056221 has 16 divisors (see below), whose sum is σ = 213681600. Its totient is φ = 95914368.

The previous prime is 152056189. The next prime is 152056241. The reversal of 152056221 is 122650251.

It is a happy number.

It is not a de Polignac number, because 152056221 - 2⁵ = 152056189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 152056191 and 152056200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152056241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71745 + ... + 73833.

It is an arithmetic number, because the mean of its divisors is an integer number (13355100).

Almost surely, 2^152056221 is an apocalyptic number.

It is an amenable number.

152056221 is a deficient number, since it is larger than the sum of its proper divisors (61625379).

152056221 is a wasteful number, since it uses less digits than its factorization.

152056221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3388.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 152056221 is about 12331.1078577717. The cubic root of 152056221 is about 533.7461199710.

The spelling of 152056221 in words is "one hundred fifty-two million, fifty-six thousand, two hundred twenty-one".