22477955 has 4 divisors (see below), whose sum is σ = 26973552. Its totient is φ = 17982360.

The previous prime is 22477933. The next prime is 22477967. The reversal of 22477955 is 55977422.

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

It is not a de Polignac number, because 22477955 - 2¹² = 22473859 is a prime.

It is a super-4 number, since 4×22477955⁴ (a number of 31 digits) contains 4444 as substring.

It is a Duffinian 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, 2247791 + ... + 2247800.

It is an arithmetic number, because the mean of its divisors is an integer number (6743388).

Almost surely, 2^22477955 is an apocalyptic number.

22477955 is a deficient number, since it is larger than the sum of its proper divisors (4495597).

22477955 is an equidigital number, since it uses as much as digits as its factorization.

22477955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4495596.

The product of its digits is 176400, while the sum is 41.

The square root of 22477955 is about 4741.0921737507. The cubic root of 22477955 is about 282.2185779169.

It can be divided in two parts, 22477 and 955, that added together give a palindrome (23432).

The spelling of 22477955 in words is "twenty-two million, four hundred seventy-seven thousand, nine hundred fifty-five".