42515553 has 8 divisors (see below), whose sum is σ = 58219648. Its totient is φ = 27577584.

The previous prime is 42515549. The next prime is 42515563. The reversal of 42515553 is 35551524.

It is a happy number.

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

It is not a de Polignac number, because 42515553 - 2² = 42515549 is a prime.

It is a zygodrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 42515553.

It is not an unprimeable number, because it can be changed into a prime (42515563) 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, 191401 + ... + 191622.

It is an arithmetic number, because the mean of its divisors is an integer number (7277456).

Almost surely, 2^42515553 is an apocalyptic number.

It is an amenable number.

42515553 is a deficient number, since it is larger than the sum of its proper divisors (15704095).

42515553 is a wasteful number, since it uses less digits than its factorization.

42515553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383063.

The product of its digits is 15000, while the sum is 30.

The square root of 42515553 is about 6520.3951567371. The cubic root of 42515553 is about 349.0191668250.

The spelling of 42515553 in words is "forty-two million, five hundred fifteen thousand, five hundred fifty-three".