4991525 has 24 divisors (see below), whose sum is σ = 7719744. Its totient is φ = 3110400.

The previous prime is 4991507. The next prime is 4991543. The reversal of 4991525 is 5251994.

It is an interprime number because it is at equal distance from previous prime (4991507) and next prime (4991543).

It is not a de Polignac number, because 4991525 - 2⁶ = 4991461 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 629 + ... + 3221.

It is an arithmetic number, because the mean of its divisors is an integer number (321656).

Almost surely, 2^4991525 is an apocalyptic number.

It is an amenable number.

4991525 is a deficient number, since it is larger than the sum of its proper divisors (2728219).

4991525 is a wasteful number, since it uses less digits than its factorization.

4991525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2621 (or 2616 counting only the distinct ones).

The product of its digits is 16200, while the sum is 35.

The square root of 4991525 is about 2234.1721061727. The cubic root of 4991525 is about 170.9009263885.

The spelling of 4991525 in words is "four million, nine hundred ninety-one thousand, five hundred twenty-five".