2151455534 has 16 divisors (see below), whose sum is σ = 3257616960. Its totient is φ = 1065630720.

The previous prime is 2151455491. The next prime is 2151455549. The reversal of 2151455534 is 4355541512.

It is a junction number, because it is equal to n+sod(n) for n = 2151455494 and 2151455503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80594 + ... + 103914.

It is an arithmetic number, because the mean of its divisors is an integer number (203601060).

Almost surely, 2^2151455534 is an apocalyptic number.

2151455534 is a deficient number, since it is larger than the sum of its proper divisors (1106161426).

2151455534 is a wasteful number, since it uses less digits than its factorization.

2151455534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23755.

The product of its digits is 60000, while the sum is 35.

The square root of 2151455534 is about 46383.7852487267. The cubic root of 2151455534 is about 1290.9540713610.

The spelling of 2151455534 in words is "two billion, one hundred fifty-one million, four hundred fifty-five thousand, five hundred thirty-four".