7545158121 has 16 divisors (see below), whose sum is σ = 10088515008. Its totient is φ = 5015976000.

The previous prime is 7545158087. The next prime is 7545158129. The reversal of 7545158121 is 1218515457.

It is not a de Polignac number, because 7545158121 - 2¹⁰ = 7545157097 is a prime.

It is a super-2 number, since 2×7545158121² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7545158121.

It is not an unprimeable number, because it can be changed into a prime (7545158129) 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, 1842286 + ... + 1846376.

It is an arithmetic number, because the mean of its divisors is an integer number (630532188).

Almost surely, 2^7545158121 is an apocalyptic number.

It is an amenable number.

7545158121 is a deficient number, since it is larger than the sum of its proper divisors (2543356887).

7545158121 is a wasteful number, since it uses less digits than its factorization.

7545158121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5672.

The product of its digits is 56000, while the sum is 39.

The square root of 7545158121 is about 86862.8696336933. The cubic root of 7545158121 is about 1961.3545857011.

The spelling of 7545158121 in words is "seven billion, five hundred forty-five million, one hundred fifty-eight thousand, one hundred twenty-one".