264400550 has 48 divisors (see below), whose sum is σ = 519585792. Its totient is φ = 99943200.

The previous prime is 264400529. The next prime is 264400573. The reversal of 264400550 is 55004462.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64667 + ... + 68633.

It is an arithmetic number, because the mean of its divisors is an integer number (10824704).

Almost surely, 2^264400550 is an apocalyptic number.

264400550 is a deficient number, since it is larger than the sum of its proper divisors (255185242).

264400550 is a wasteful number, since it uses less digits than its factorization.

264400550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4053 (or 4048 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 264400550 is about 16260.3982116060. The cubic root of 264400550 is about 641.8311409116.

The spelling of 264400550 in words is "two hundred sixty-four million, four hundred thousand, five hundred fifty".