7490557 has 8 divisors (see below), whose sum is σ = 8116416. Its totient is φ = 6885312.

The previous prime is 7490551. The next prime is 7490573. The reversal of 7490557 is 7550947.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7490557 is a prime.

It is a super-2 number, since 2×7490557² = 112216888340498, 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 (7490551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4393 + ... + 5854.

It is an arithmetic number, because the mean of its divisors is an integer number (1014552).

Almost surely, 2^7490557 is an apocalyptic number.

It is an amenable number.

7490557 is a deficient number, since it is larger than the sum of its proper divisors (625859).

7490557 is a wasteful number, since it uses less digits than its factorization.

7490557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10307.

The product of its (nonzero) digits is 44100, while the sum is 37.

The square root of 7490557 is about 2736.8881964742. Note that the first 3 decimals coincide. The cubic root of 7490557 is about 195.6611962338.

The spelling of 7490557 in words is "seven million, four hundred ninety thousand, five hundred fifty-seven".