2154522400 has 36 divisors (see below), whose sum is σ = 5259729762. Its totient is φ = 861808640.

The previous prime is 2154522373. The next prime is 2154522437. The reversal of 2154522400 is 42254512.

It can be written as a sum of positive squares in 3 ways, for example, as 1200206736 + 954315664 = 34644^2 + 30892^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1345777 + ... + 1347376.

Almost surely, 2^2154522400 is an apocalyptic number.

2154522400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2154522400 is an abundant number, since it is smaller than the sum of its proper divisors (3105207362).

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

2154522400 is a wasteful number, since it uses less digits than its factorization.

2154522400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2693173 (or 2693160 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 2154522400 is about 46416.8331535015. The cubic root of 2154522400 is about 1291.5671916919.

Adding to 2154522400 its reverse (42254512), we get a palindrome (2196776912).

The spelling of 2154522400 in words is "two billion, one hundred fifty-four million, five hundred twenty-two thousand, four hundred".