2155350400 has 96 divisors (see below), whose sum is σ = 6085079280. Its totient is φ = 738969600.

The previous prime is 2155350397. The next prime is 2155350409. The reversal of 2155350400 is 40535512.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155350409) 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, 25711 + ... + 70510.

Almost surely, 2^2155350400 is an apocalyptic number.

2155350400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2155350400 is an abundant number, since it is smaller than the sum of its proper divisors (3929728880).

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

2155350400 is an equidigital number, since it uses as much as digits as its factorization.

2155350400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96252 (or 96235 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 2155350400 is about 46425.7514748011. The cubic root of 2155350400 is about 1291.7326236640.

Adding to 2155350400 its reverse (40535512), we get a palindrome (2195885912).

The spelling of 2155350400 in words is "two billion, one hundred fifty-five million, three hundred fifty thousand, four hundred".