550521405 has 48 divisors (see below), whose sum is σ = 1125755904. Its totient is φ = 243544320.

The previous prime is 550521373. The next prime is 550521427. The reversal of 550521405 is 504125055.

It is not a de Polignac number, because 550521405 - 2⁵ = 550521373 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18424 + ... + 37953.

It is an arithmetic number, because the mean of its divisors is an integer number (23453248).

Almost surely, 2^550521405 is an apocalyptic number.

It is an amenable number.

550521405 is an abundant number, since it is smaller than the sum of its proper divisors (575234499).

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

550521405 is a wasteful number, since it uses less digits than its factorization.

550521405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56426 (or 56423 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The square root of 550521405 is about 23463.1925577062. The cubic root of 550521405 is about 819.5800968323.

The spelling of 550521405 in words is "five hundred fifty million, five hundred twenty-one thousand, four hundred five".