2154244503 has 4 divisors (see below), whose sum is σ = 2872326008. Its totient is φ = 1436163000.

The previous prime is 2154244493. The next prime is 2154244513. The reversal of 2154244503 is 3054424512.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2154244493) and next prime (2154244513).

It is not a de Polignac number, because 2154244503 - 2¹⁶ = 2154178967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154244513) 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, 359040748 + ... + 359040753.

It is an arithmetic number, because the mean of its divisors is an integer number (718081502).

Almost surely, 2^2154244503 is an apocalyptic number.

2154244503 is a deficient number, since it is larger than the sum of its proper divisors (718081505).

2154244503 is an equidigital number, since it uses as much as digits as its factorization.

2154244503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718081504.

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 2154244503 is about 46413.8395632165. The cubic root of 2154244503 is about 1291.5116591864.

Subtracting 2154244503 from its reverse (3054424512), we obtain a square (900180009 = 30003²).

The spelling of 2154244503 in words is "two billion, one hundred fifty-four million, two hundred forty-four thousand, five hundred three".