4257157557 has 8 divisors (see below), whose sum is σ = 5681242240. Its totient is φ = 2835588960.

The previous prime is 4257157549. The next prime is 4257157577. The reversal of 4257157557 is 7557517524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4257157557 - 2³ = 4257157549 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 (4257157577) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 625069 + ... + 631842.

It is an arithmetic number, because the mean of its divisors is an integer number (710155280).

Almost surely, 2^4257157557 is an apocalyptic number.

It is an amenable number.

4257157557 is a deficient number, since it is larger than the sum of its proper divisors (1424084683).

4257157557 is a wasteful number, since it uses less digits than its factorization.

4257157557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1258043.

The product of its digits is 1715000, while the sum is 48.

The square root of 4257157557 is about 65246.8969147192. The cubic root of 4257157557 is about 1620.7147124523.

It can be divided in two parts, 42571 and 57557, that added together give a triangular number (100128 = T₄₄₇).

The spelling of 4257157557 in words is "four billion, two hundred fifty-seven million, one hundred fifty-seven thousand, five hundred fifty-seven".