2151001539 has 6 divisors (see below), whose sum is σ = 3107002236. Its totient is φ = 1434001020.

The previous prime is 2151001507. The next prime is 2151001553. The reversal of 2151001539 is 9351001512.

2151001539 is a `hidden beast` number, since 21 + 5 + 100 + 1 + 539 = 666.

It is not a de Polignac number, because 2151001539 - 2⁵ = 2151001507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2151001939) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 119500077 + ... + 119500094.

It is an arithmetic number, because the mean of its divisors is an integer number (517833706).

Almost surely, 2^2151001539 is an apocalyptic number.

2151001539 is a deficient number, since it is larger than the sum of its proper divisors (956000697).

2151001539 is a wasteful number, since it uses less digits than its factorization.

2151001539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239000177 (or 239000174 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 27.

The square root of 2151001539 is about 46378.8910928237. The cubic root of 2151001539 is about 1290.8632602932.

Subtracting from 2151001539 its sum of digits (27), we obtain a palindrome (2151001512).

The spelling of 2151001539 in words is "two billion, one hundred fifty-one million, one thousand, five hundred thirty-nine".