4997820557 has 8 divisors (see below), whose sum is σ = 5087270400. Its totient is φ = 4908528864.

The previous prime is 4997820551. The next prime is 4997820563. The reversal of 4997820557 is 7550287994.

It is an interprime number because it is at equal distance from previous prime (4997820551) and next prime (4997820563).

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

It is a cyclic number.

It is not a de Polignac number, because 4997820557 - 2⁶ = 4997820493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4997820551) 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, 25169 + ... + 103097.

It is an arithmetic number, because the mean of its divisors is an integer number (635908800).

Almost surely, 2^4997820557 is an apocalyptic number.

It is an amenable number.

4997820557 is a deficient number, since it is larger than the sum of its proper divisors (89449843).

4997820557 is a wasteful number, since it uses less digits than its factorization.

4997820557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79075.

The product of its (nonzero) digits is 6350400, while the sum is 56.

The square root of 4997820557 is about 70695.2654496749. The cubic root of 4997820557 is about 1709.7274575615.

The spelling of 4997820557 in words is "four billion, nine hundred ninety-seven million, eight hundred twenty thousand, five hundred fifty-seven".