4157497 has 4 divisors (see below), whose sum is σ = 4179456. Its totient is φ = 4135540.

The previous prime is 4157477. The next prime is 4157501. The reversal of 4157497 is 7947514.

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: 7947514 = 2 ⋅3973757.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4157497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4157437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10693 + ... + 11074.

It is an arithmetic number, because the mean of its divisors is an integer number (1044864).

Almost surely, 2^4157497 is an apocalyptic number.

It is an amenable number.

4157497 is a deficient number, since it is larger than the sum of its proper divisors (21959).

4157497 is a wasteful number, since it uses less digits than its factorization.

4157497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21958.

The product of its digits is 35280, while the sum is 37.

The square root of 4157497 is about 2038.9941147536. The cubic root of 4157497 is about 160.7967678574.

The spelling of 4157497 in words is "four million, one hundred fifty-seven thousand, four hundred ninety-seven".