1022621455 has 4 divisors (see below), whose sum is σ = 1227145752. Its totient is φ = 818097160.

The previous prime is 1022621443. The next prime is 1022621513. The reversal of 1022621455 is 5541262201.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1022621455 - 2⁹ = 1022620943 is a prime.

It is a super-3 number, since 3×1022621455³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102262141 + ... + 102262150.

It is an arithmetic number, because the mean of its divisors is an integer number (306786438).

Almost surely, 2^1022621455 is an apocalyptic number.

1022621455 is a deficient number, since it is larger than the sum of its proper divisors (204524297).

1022621455 is an equidigital number, since it uses as much as digits as its factorization.

1022621455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204524296.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 1022621455 is about 31978.4529800927. The cubic root of 1022621455 is about 1007.4843300582.

Adding to 1022621455 its reverse (5541262201), we get a palindrome (6563883656).

The spelling of 1022621455 in words is "one billion, twenty-two million, six hundred twenty-one thousand, four hundred fifty-five".