42528577 has 32 divisors (see below), whose sum is σ = 56996352. Its totient is φ = 30772224.

The previous prime is 42528571. The next prime is 42528581. The reversal of 42528577 is 77582524.

It is a happy number.

It is not a de Polignac number, because 42528577 - 2³ = 42528569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42528571) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56868 + ... + 57610.

It is an arithmetic number, because the mean of its divisors is an integer number (1781136).

Almost surely, 2^42528577 is an apocalyptic number.

It is an amenable number.

42528577 is a deficient number, since it is larger than the sum of its proper divisors (14467775).

42528577 is a wasteful number, since it uses less digits than its factorization.

42528577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817.

The product of its digits is 156800, while the sum is 40.

The square root of 42528577 is about 6521.3937927409. The cubic root of 42528577 is about 349.0548021100.

It can be divided in two parts, 425 and 28577, that multiplied together give a square (12145225 = 3485²).

The spelling of 42528577 in words is "forty-two million, five hundred twenty-eight thousand, five hundred seventy-seven".