2100551542 has 16 divisors (see below), whose sum is σ = 3220823232. Its totient is φ = 1026984960.

The previous prime is 2100551539. The next prime is 2100551549. The reversal of 2100551542 is 2451550012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100551549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98692 + ... + 118072.

It is an arithmetic number, because the mean of its divisors is an integer number (201301452).

Almost surely, 2^2100551542 is an apocalyptic number.

2100551542 is a deficient number, since it is larger than the sum of its proper divisors (1120271690).

2100551542 is a wasteful number, since it uses less digits than its factorization.

2100551542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20583.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 2100551542 is about 45831.7743710627. The cubic root of 2100551542 is about 1280.6912652049.

The spelling of 2100551542 in words is "two billion, one hundred million, five hundred fifty-one thousand, five hundred forty-two".