525550440 has 64 divisors (see below), whose sum is σ = 1627522560. Its totient is φ = 135624960.

The previous prime is 525550357. The next prime is 525550451. The reversal of 525550440 is 44055525.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 525550398 and 525550407.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66919 + ... + 74358.

It is an arithmetic number, because the mean of its divisors is an integer number (25430040).

Almost surely, 2^525550440 is an apocalyptic number.

It is an amenable number.

525550440 is an abundant number, since it is smaller than the sum of its proper divisors (1101972120).

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

525550440 is a wasteful number, since it uses less digits than its factorization.

525550440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141322 (or 141318 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 30.

The square root of 525550440 is about 22924.8869135706. The cubic root of 525550440 is about 806.9961596687.

The spelling of 525550440 in words is "five hundred twenty-five million, five hundred fifty thousand, four hundred forty".