7145145 has 32 divisors (see below), whose sum is σ = 14519040. Its totient is φ = 3265920.

The previous prime is 7145137. The next prime is 7145153. The reversal of 7145145 is 5415417.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (7145137) and next prime (7145153).

It is not a de Polignac number, because 7145145 - 2³ = 7145137 is a prime.

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

It is a zygodrome in base 3.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2836 + ... + 4725.

It is an arithmetic number, because the mean of its divisors is an integer number (453720).

Almost surely, 2^7145145 is an apocalyptic number.

It is an amenable number.

7145145 is an abundant number, since it is smaller than the sum of its proper divisors (7373895).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7145145 is a wasteful number, since it uses less digits than its factorization.

7145145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7582 (or 7576 counting only the distinct ones).

The product of its digits is 2800, while the sum is 27.

The square root of 7145145 is about 2673.0404037350. The cubic root of 7145145 is about 192.6062380914.

The spelling of 7145145 in words is "seven million, one hundred forty-five thousand, one hundred forty-five".