2154153531 has 16 divisors (see below), whose sum is σ = 2913039360. Its totient is φ = 1415759520.

The previous prime is 2154153517. The next prime is 2154153601. The reversal of 2154153531 is 1353514512.

It is not a de Polignac number, because 2154153531 - 2⁷ = 2154153403 is a prime.

It is a super-2 number, since 2×2154153531² = 9280754870239535922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2154153731) 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, 110241 + ... + 128301.

It is an arithmetic number, because the mean of its divisors is an integer number (182064960).

Almost surely, 2^2154153531 is an apocalyptic number.

2154153531 is a deficient number, since it is larger than the sum of its proper divisors (758885829).

2154153531 is a wasteful number, since it uses less digits than its factorization.

2154153531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18626.

The product of its digits is 9000, while the sum is 30.

The square root of 2154153531 is about 46412.8595434498. The cubic root of 2154153531 is about 1291.4934791002.

The spelling of 2154153531 in words is "two billion, one hundred fifty-four million, one hundred fifty-three thousand, five hundred thirty-one".