4172157 has 48 divisors (see below), whose sum is σ = 7255872. Its totient is φ = 2280960.

The previous prime is 4172141. The next prime is 4172159. The reversal of 4172157 is 7512714.

It is not a de Polignac number, because 4172157 - 2⁴ = 4172141 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4172157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4172159) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62238 + ... + 62304.

It is an arithmetic number, because the mean of its divisors is an integer number (151164).

Almost surely, 2^4172157 is an apocalyptic number.

It is an amenable number.

4172157 is a deficient number, since it is larger than the sum of its proper divisors (3083715).

4172157 is a wasteful number, since it uses less digits than its factorization.

4172157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 135 counting only the distinct ones).

The product of its digits is 1960, while the sum is 27.

The square root of 4172157 is about 2042.5858611084. The cubic root of 4172157 is about 160.9855445273.

The spelling of 4172157 in words is "four million, one hundred seventy-two thousand, one hundred fifty-seven".