7001157 has 4 divisors (see below), whose sum is σ = 9334880. Its totient is φ = 4667436.

The previous prime is 7001123. The next prime is 7001213. The reversal of 7001157 is 7511007.

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 de Polignac number, because none of the positive numbers 2^k-7001157 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7001107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1166857 + ... + 1166862.

It is an arithmetic number, because the mean of its divisors is an integer number (2333720).

Almost surely, 2^7001157 is an apocalyptic number.

It is an amenable number.

7001157 is a deficient number, since it is larger than the sum of its proper divisors (2333723).

7001157 is a wasteful number, since it uses less digits than its factorization.

7001157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2333722.

The product of its (nonzero) digits is 245, while the sum is 21.

The square root of 7001157 is about 2645.9699544779. The cubic root of 7001157 is about 191.3036570365.

The spelling of 7001157 in words is "seven million, one thousand, one hundred fifty-seven".