1455222400 has 96 divisors (see below), whose sum is σ = 3638829600. Its totient is φ = 574970880.

The previous prime is 1455222359. The next prime is 1455222401. The reversal of 1455222400 is 42225541.

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

It is not an unprimeable number, because it can be changed into a prime (1455222401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 262861 + ... + 268339.

It is an arithmetic number, because the mean of its divisors is an integer number (37904475).

Almost surely, 2^1455222400 is an apocalyptic number.

1455222400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1455222400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1819414800).

1455222400 is an abundant number, since it is smaller than the sum of its proper divisors (2183607200).

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

1455222400 is an equidigital number, since it uses as much as digits as its factorization.

1455222400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5586 (or 5569 counting only the distinct ones).

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

The square root of 1455222400 is about 38147.3773672582. The cubic root of 1455222400 is about 1133.2084137594.

Adding to 1455222400 its reverse (42225541), we get a palindrome (1497447941).

The spelling of 1455222400 in words is "one billion, four hundred fifty-five million, two hundred twenty-two thousand, four hundred".