2154020531 has 8 divisors (see below), whose sum is σ = 2341395504. Its totient is φ = 1969742880.

The previous prime is 2154020503. The next prime is 2154020549. The reversal of 2154020531 is 1350204512.

2154020531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2154020531 - 2⁶ = 2154020467 is a prime.

It is a super-2 number, since 2×2154020531² = 9279608895939043922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2154020497 and 2154020506.

It is not an unprimeable number, because it can be changed into a prime (2154020131) 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, 772880 + ... + 775661.

It is an arithmetic number, because the mean of its divisors is an integer number (292674438).

Almost surely, 2^2154020531 is an apocalyptic number.

2154020531 is a deficient number, since it is larger than the sum of its proper divisors (187374973).

2154020531 is a wasteful number, since it uses less digits than its factorization.

2154020531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548661.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2154020531 is about 46411.4267287701. The cubic root of 2154020531 is about 1291.4668991056.

The spelling of 2154020531 in words is "two billion, one hundred fifty-four million, twenty thousand, five hundred thirty-one".