4992557 has 4 divisors (see below), whose sum is σ = 4997916. Its totient is φ = 4987200.

The previous prime is 4992551. The next prime is 4992569. The reversal of 4992557 is 7552994.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 724201 + 4268356 = 851^2 + 2066^2 .

It is a cyclic number.

It is not a de Polignac number, because 4992557 - 2¹⁴ = 4976173 is a prime.

It is a d-powerful number, because it can be written as 4⁴ + 9² + 9⁷ + 2¹⁷ + 5 + 5⁷ + 7² .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4992551) 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, 878 + ... + 3279.

It is an arithmetic number, because the mean of its divisors is an integer number (1249479).

Almost surely, 2^4992557 is an apocalyptic number.

It is an amenable number.

4992557 is a deficient number, since it is larger than the sum of its proper divisors (5359).

4992557 is a wasteful number, since it uses less digits than its factorization.

4992557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5358.

The product of its digits is 113400, while the sum is 41.

The square root of 4992557 is about 2234.4030522715. The cubic root of 4992557 is about 170.9127035243.

The spelling of 4992557 in words is "four million, nine hundred ninety-two thousand, five hundred fifty-seven".