22151355 has 16 divisors (see below), whose sum is σ = 35527680. Its totient is φ = 11785568.

The previous prime is 22151281. The next prime is 22151411. The reversal of 22151355 is 55315122.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22151355 - 2¹² = 22147259 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5644 + ... + 8726.

It is an arithmetic number, because the mean of its divisors is an integer number (2220480).

Almost surely, 2^22151355 is an apocalyptic number.

22151355 is a deficient number, since it is larger than the sum of its proper divisors (13376325).

22151355 is a wasteful number, since it uses less digits than its factorization.

22151355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3570.

The product of its digits is 1500, while the sum is 24.

The square root of 22151355 is about 4706.5226016668. The cubic root of 22151355 is about 280.8450448634.

Adding to 22151355 its reverse (55315122), we get a palindrome (77466477).

It can be divided in two parts, 2215 and 1355, that added together give a triangular number (3570 = T₈₄).

The spelling of 22151355 in words is "twenty-two million, one hundred fifty-one thousand, three hundred fifty-five".