464221555 has 16 divisors (see below), whose sum is σ = 640560384. Its totient is φ = 316366560.

The previous prime is 464221523. The next prime is 464221579. The reversal of 464221555 is 555122464.

It is not a de Polignac number, because 464221555 - 2⁵ = 464221523 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 464221555.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34981 + ... + 46390.

It is an arithmetic number, because the mean of its divisors is an integer number (40035024).

Almost surely, 2^464221555 is an apocalyptic number.

464221555 is a deficient number, since it is larger than the sum of its proper divisors (176338829).

464221555 is a wasteful number, since it uses less digits than its factorization.

464221555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81546.

The product of its digits is 48000, while the sum is 34.

The square root of 464221555 is about 21545.8013311179. The cubic root of 464221555 is about 774.2985286443.

Subtracting 464221555 from its reverse (555122464), we obtain a palindrome (90900909).

The spelling of 464221555 in words is "four hundred sixty-four million, two hundred twenty-one thousand, five hundred fifty-five".