7545981 has 8 divisors (see below), whose sum is σ = 10251360. Its totient is φ = 4935632.

The previous prime is 7545953. The next prime is 7545997. The reversal of 7545981 is 1895457.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7545981 - 2⁵ = 7545949 is a prime.

It is a super-2 number, since 2×7545981² = 113883658504722, which contains 22 as substring.

7545981 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7545911) 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 7 ways as a sum of consecutive naturals, for example, 23571 + ... + 23888.

It is an arithmetic number, because the mean of its divisors is an integer number (1281420).

Almost surely, 2^7545981 is an apocalyptic number.

It is an amenable number.

7545981 is a deficient number, since it is larger than the sum of its proper divisors (2705379).

7545981 is a wasteful number, since it uses less digits than its factorization.

7545981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47515.

The product of its digits is 50400, while the sum is 39.

The square root of 7545981 is about 2746.9949035264. The cubic root of 7545981 is about 196.1425885238.

It can be divided in two parts, 75 and 45981, that added together give a triangular number (46056 = T₃₀₃).

The spelling of 7545981 in words is "seven million, five hundred forty-five thousand, nine hundred eighty-one".