7057557 has 16 divisors (see below), whose sum is σ = 11260480. Its totient is φ = 4342896.

The previous prime is 7057549. The next prime is 7057559. The reversal of 7057557 is 7557507.

It is not a de Polignac number, because 7057557 - 2³ = 7057549 is a prime.

It is a super-2 number, since 2×7057557² = 99618221616498, which contains 22 as substring.

It is a Duffinian number.

7057557 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7057559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9703 + ... + 10404.

It is an arithmetic number, because the mean of its divisors is an integer number (703780).

Almost surely, 2^7057557 is an apocalyptic number.

It is an amenable number.

7057557 is a deficient number, since it is larger than the sum of its proper divisors (4202923).

7057557 is a wasteful number, since it uses less digits than its factorization.

7057557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20129 (or 20123 counting only the distinct ones).

The product of its (nonzero) digits is 42875, while the sum is 36.

The square root of 7057557 is about 2656.6062937515. The cubic root of 7057557 is about 191.8159858052.

The spelling of 7057557 in words is "seven million, fifty-seven thousand, five hundred fifty-seven".