5145158921 has 16 divisors (see below), whose sum is σ = 6040500480. Its totient is φ = 4290501120.

The previous prime is 5145158911. The next prime is 5145158927. The reversal of 5145158921 is 1298515415.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5145158921 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (5145158927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78065 + ... + 128001.

It is an arithmetic number, because the mean of its divisors is an integer number (377531280).

Almost surely, 2^5145158921 is an apocalyptic number.

It is an amenable number.

5145158921 is a deficient number, since it is larger than the sum of its proper divisors (895341559).

5145158921 is a wasteful number, since it uses less digits than its factorization.

5145158921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50344.

The product of its digits is 72000, while the sum is 41.

The square root of 5145158921 is about 71729.7631461306. The cubic root of 5145158921 is about 1726.3662265825.

The spelling of 5145158921 in words is "five billion, one hundred forty-five million, one hundred fifty-eight thousand, nine hundred twenty-one".