42557501 has 8 divisors (see below), whose sum is σ = 48681984. Its totient is φ = 36444240.

The previous prime is 42557497. The next prime is 42557509. The reversal of 42557501 is 10575524.

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

It is not a de Polignac number, because 42557501 - 2² = 42557497 is a prime.

It is a super-2 number, since 2×42557501² = 3622281782730002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42557509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8231 + ... + 12363.

It is an arithmetic number, because the mean of its divisors is an integer number (6085248).

Almost surely, 2^42557501 is an apocalyptic number.

It is an amenable number.

42557501 is a deficient number, since it is larger than the sum of its proper divisors (6124483).

42557501 is a wasteful number, since it uses less digits than its factorization.

42557501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5611.

The product of its (nonzero) digits is 7000, while the sum is 29.

The square root of 42557501 is about 6523.6110399073. The cubic root of 42557501 is about 349.1339157623.

The spelling of 42557501 in words is "forty-two million, five hundred fifty-seven thousand, five hundred one".