221252598 has 48 divisors (see below), whose sum is σ = 549110016. Its totient is φ = 63071280.

The previous prime is 221252579. The next prime is 221252621. The reversal of 221252598 is 895252122.

221252598 is a `hidden beast` number, since 2 + 2 + 12 + 52 + 598 = 666.

221252598 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61633 + ... + 65123.

It is an arithmetic number, because the mean of its divisors is an integer number (11439792).

Almost surely, 2^221252598 is an apocalyptic number.

221252598 is an abundant number, since it is smaller than the sum of its proper divisors (327857418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221252598 is a wasteful number, since it uses less digits than its factorization.

221252598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4009 (or 4006 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 221252598 is about 14874.5621112018. The cubic root of 221252598 is about 604.8246177884.

The spelling of 221252598 in words is "two hundred twenty-one million, two hundred fifty-two thousand, five hundred ninety-eight".