4509157 has 4 divisors (see below), whose sum is σ = 4519360. Its totient is φ = 4498956.

The previous prime is 4509149. The next prime is 4509161. The reversal of 4509157 is 7519054.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7519054 = 2 ⋅3759527.

It is a cyclic number.

It is not a de Polignac number, because 4509157 - 2³ = 4509149 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 (4509107) 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, 4407 + ... + 5332.

It is an arithmetic number, because the mean of its divisors is an integer number (1129840).

Almost surely, 2^4509157 is an apocalyptic number.

It is an amenable number.

4509157 is a deficient number, since it is larger than the sum of its proper divisors (10203).

4509157 is an equidigital number, since it uses as much as digits as its factorization.

4509157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10202.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 4509157 is about 2123.4775722856. The cubic root of 4509157 is about 165.2082708232.

The spelling of 4509157 in words is "four million, five hundred nine thousand, one hundred fifty-seven".