52420578 has 32 divisors (see below), whose sum is σ = 121512960. Its totient is φ = 14765520.

The previous prime is 52420561. The next prime is 52420579. The reversal of 52420578 is 87502425.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (52420579) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5808 + ... + 11771.

It is an arithmetic number, because the mean of its divisors is an integer number (3797280).

Almost surely, 2^52420578 is an apocalyptic number.

52420578 is an abundant number, since it is smaller than the sum of its proper divisors (69092382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52420578 is a wasteful number, since it uses less digits than its factorization.

52420578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17662.

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 52420578 is about 7240.2056600624. The cubic root of 52420578 is about 374.2547046297.

The spelling of 52420578 in words is "fifty-two million, four hundred twenty thousand, five hundred seventy-eight".