2542554021 has 16 divisors (see below), whose sum is σ = 4042819584. Its totient is φ = 1389718704.

The previous prime is 2542554019. The next prime is 2542554031. The reversal of 2542554021 is 1204552452.

2542554021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2542554021 - 2¹ = 2542554019 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2542554021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2542554031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2631561 + ... + 2632526.

It is an arithmetic number, because the mean of its divisors is an integer number (252676224).

Almost surely, 2^2542554021 is an apocalyptic number.

2542554021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2542554021 is a deficient number, since it is larger than the sum of its proper divisors (1500265563).

2542554021 is a wasteful number, since it uses less digits than its factorization.

2542554021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5264120.

The product of its (nonzero) digits is 16000, while the sum is 30.

The square root of 2542554021 is about 50423.7446150125. The cubic root of 2542554021 is about 1364.8661501138.

The spelling of 2542554021 in words is "two billion, five hundred forty-two million, five hundred fifty-four thousand, twenty-one".