2151455331 has 4 divisors (see below), whose sum is σ = 2868607112. Its totient is φ = 1434303552.

The previous prime is 2151455303. The next prime is 2151455333. The reversal of 2151455331 is 1335541512.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2151455331 - 2¹⁰ = 2151454307 is a prime.

It is a super-2 number, since 2×2151455331² = 9257520082576639122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2151455333) 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 3 ways as a sum of consecutive naturals, for example, 358575886 + ... + 358575891.

It is an arithmetic number, because the mean of its divisors is an integer number (717151778).

Almost surely, 2^2151455331 is an apocalyptic number.

2151455331 is a deficient number, since it is larger than the sum of its proper divisors (717151781).

2151455331 is an equidigital number, since it uses as much as digits as its factorization.

2151455331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717151780.

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

The square root of 2151455331 is about 46383.7830604620. The cubic root of 2151455331 is about 1290.9540307585.

Adding to 2151455331 its reverse (1335541512), we get a palindrome (3486996843).

The spelling of 2151455331 in words is "two billion, one hundred fifty-one million, four hundred fifty-five thousand, three hundred thirty-one".