2154705507 has 24 divisors (see below), whose sum is σ = 3283737600. Its totient is φ = 1357719408.

The previous prime is 2154705493. The next prime is 2154705517. The reversal of 2154705507 is 7055074512.

It is not a de Polignac number, because 2154705507 - 2²⁷ = 2020487779 is a prime.

It is a super-2 number, since 2×2154705507² = 9285511643792254098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2154705517) 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 23 ways as a sum of consecutive naturals, for example, 60718 + ... + 89420.

It is an arithmetic number, because the mean of its divisors is an integer number (136822400).

Almost surely, 2^2154705507 is an apocalyptic number.

2154705507 is a deficient number, since it is larger than the sum of its proper divisors (1129032093).

2154705507 is a wasteful number, since it uses less digits than its factorization.

2154705507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29167 (or 29164 counting only the distinct ones).

The product of its (nonzero) digits is 49000, while the sum is 36.

The square root of 2154705507 is about 46418.8055318101. The cubic root of 2154705507 is about 1291.6037795832.

The spelling of 2154705507 in words is "two billion, one hundred fifty-four million, seven hundred five thousand, five hundred seven".