2154222552 has 16 divisors (see below), whose sum is σ = 5385556440. Its totient is φ = 718074176.

The previous prime is 2154222523. The next prime is 2154222559. The reversal of 2154222552 is 2552224512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154222559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44879613 + ... + 44879660.

Almost surely, 2^2154222552 is an apocalyptic number.

It is an amenable number.

2154222552 is an abundant number, since it is smaller than the sum of its proper divisors (3231333888).

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

2154222552 is a wasteful number, since it uses less digits than its factorization.

2154222552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89759282 (or 89759278 counting only the distinct ones).

The product of its digits is 16000, while the sum is 30.

The square root of 2154222552 is about 46413.6030921970. The cubic root of 2154222552 is about 1291.5072724871.

The spelling of 2154222552 in words is "two billion, one hundred fifty-four million, two hundred twenty-two thousand, five hundred fifty-two".