2155443502 has 16 divisors (see below), whose sum is σ = 3346284960. Its totient is φ = 1040051488.

The previous prime is 2155443491. The next prime is 2155443541. The reversal of 2155443502 is 2053445512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128823 + ... + 144589.

It is an arithmetic number, because the mean of its divisors is an integer number (209142810).

Almost surely, 2^2155443502 is an apocalyptic number.

2155443502 is a deficient number, since it is larger than the sum of its proper divisors (1190841458).

2155443502 is a wasteful number, since it uses less digits than its factorization.

2155443502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18155.

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 2155443502 is about 46426.7541617977. The cubic root of 2155443502 is about 1291.7512225206.

It can be divided in two parts, 21554 and 43502, that added together give a palindrome (65056).

The spelling of 2155443502 in words is "two billion, one hundred fifty-five million, four hundred forty-three thousand, five hundred two".