7390157 has 4 divisors (see below), whose sum is σ = 7645020. Its totient is φ = 7135296.

The previous prime is 7390151. The next prime is 7390217. The reversal of 7390157 is 7510937.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7510937 = 7 ⋅1072991.

It can be written as a sum of positive squares in 2 ways, for example, as 4990756 + 2399401 = 2234^2 + 1549^2 .

It is a cyclic number.

It is not a de Polignac number, because 7390157 - 2⁸ = 7389901 is a prime.

It is a super-2 number, since 2×7390157² = 109228840969298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7390151) 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, 127388 + ... + 127445.

It is an arithmetic number, because the mean of its divisors is an integer number (1911255).

Almost surely, 2^7390157 is an apocalyptic number.

It is an amenable number.

7390157 is a deficient number, since it is larger than the sum of its proper divisors (254863).

7390157 is a wasteful number, since it uses less digits than its factorization.

7390157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254862.

The product of its (nonzero) digits is 6615, while the sum is 32.

The square root of 7390157 is about 2718.4843203521. The cubic root of 7390157 is about 194.7830767708.

The spelling of 7390157 in words is "seven million, three hundred ninety thousand, one hundred fifty-seven".