7872537 has 4 divisors (see below), whose sum is σ = 10496720. Its totient is φ = 5248356.

The previous prime is 7872521. The next prime is 7872541. The reversal of 7872537 is 7352787.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 7872537 - 2⁴ = 7872521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7872495 and 7872504.

It is not an unprimeable number, because it can be changed into a prime (7872577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1312087 + ... + 1312092.

It is an arithmetic number, because the mean of its divisors is an integer number (2624180).

Almost surely, 2^7872537 is an apocalyptic number.

It is an amenable number.

7872537 is a deficient number, since it is larger than the sum of its proper divisors (2624183).

7872537 is a wasteful number, since it uses less digits than its factorization.

7872537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2624182.

The product of its digits is 82320, while the sum is 39.

The square root of 7872537 is about 2805.8041628025. The cubic root of 7872537 is about 198.9321166069.

The spelling of 7872537 in words is "seven million, eight hundred seventy-two thousand, five hundred thirty-seven".