2154550531 has 6 divisors (see below), whose sum is σ = 2506313940. Its totient is φ = 1846757556.

The previous prime is 2154550523. The next prime is 2154550583. The reversal of 2154550531 is 1350554512.

It is not a de Polignac number, because 2154550531 - 2³ = 2154550523 is a prime.

It is a super-2 number, since 2×2154550531² = 9284175981264763922, 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 = 2154550493 and 2154550502.

It is not an unprimeable number, because it can be changed into a prime (2154550501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21985161 + ... + 21985258.

It is an arithmetic number, because the mean of its divisors is an integer number (417718990).

Almost surely, 2^2154550531 is an apocalyptic number.

2154550531 is a deficient number, since it is larger than the sum of its proper divisors (351763409).

2154550531 is an equidigital number, since it uses as much as digits as its factorization.

2154550531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43970433 (or 43970426 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 2154550531 is about 46417.1361783555. The cubic root of 2154550531 is about 1291.5728128787.

The spelling of 2154550531 in words is "two billion, one hundred fifty-four million, five hundred fifty thousand, five hundred thirty-one".