42551511 has 8 divisors (see below), whose sum is σ = 56930160. Its totient is φ = 28270272.

The previous prime is 42551501. The next prime is 42551513. The reversal of 42551511 is 11515524.

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

It is not a de Polignac number, because 42551511 - 2⁶ = 42551447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42551513) 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, 23326 + ... + 25083.

It is an arithmetic number, because the mean of its divisors is an integer number (7116270).

Almost surely, 2^42551511 is an apocalyptic number.

42551511 is a deficient number, since it is larger than the sum of its proper divisors (14378649).

42551511 is a wasteful number, since it uses less digits than its factorization.

42551511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48705.

The product of its digits is 1000, while the sum is 24.

The square root of 42551511 is about 6523.1519221922. The cubic root of 42551511 is about 349.1175347074.

The spelling of 42551511 in words is "forty-two million, five hundred fifty-one thousand, five hundred eleven".