7145091 has 10 divisors (see below), whose sum is σ = 10673652. Its totient is φ = 4763340.

The previous prime is 7145087. The next prime is 7145101. The reversal of 7145091 is 1905417.

It is not a de Polignac number, because 7145091 - 2² = 7145087 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (7145011) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 44025 + ... + 44186.

Almost surely, 2^7145091 is an apocalyptic number.

7145091 is a deficient number, since it is larger than the sum of its proper divisors (3528561).

7145091 is an equidigital number, since it uses as much as digits as its factorization.

7145091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88223 (or 88214 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 7145091 is about 2673.0303028585. The cubic root of 7145091 is about 192.6057528779.

The spelling of 7145091 in words is "seven million, one hundred forty-five thousand, ninety-one".