7545381 has 4 divisors (see below), whose sum is σ = 10060512. Its totient is φ = 5030252.

The previous prime is 7545367. The next prime is 7545443. The reversal of 7545381 is 1835457.

7545381 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7545381 - 2⁹ = 7544869 is a prime.

It is a super-2 number, since 2×7545381² = 113865548870322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7545341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1257561 + ... + 1257566.

It is an arithmetic number, because the mean of its divisors is an integer number (2515128).

Almost surely, 2^7545381 is an apocalyptic number.

It is an amenable number.

7545381 is a deficient number, since it is larger than the sum of its proper divisors (2515131).

7545381 is a wasteful number, since it uses less digits than its factorization.

7545381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2515130.

The product of its digits is 16800, while the sum is 33.

The square root of 7545381 is about 2746.8856911055. The cubic root of 7545381 is about 196.1373897885.

The spelling of 7545381 in words is "seven million, five hundred forty-five thousand, three hundred eighty-one".