551897325 has 36 divisors (see below), whose sum is σ = 1129728288. Its totient is φ = 252295200.

The previous prime is 551897287. The next prime is 551897327. The reversal of 551897325 is 523798155.

551897325 is a `hidden beast` number, since 551 + 8 + 9 + 73 + 25 = 666.

It is not a de Polignac number, because 551897325 - 2¹⁶ = 551831789 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551897327) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 173631 + ... + 176780.

Almost surely, 2^551897325 is an apocalyptic number.

It is an amenable number.

551897325 is an abundant number, since it is smaller than the sum of its proper divisors (577830963).

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

551897325 is a wasteful number, since it uses less digits than its factorization.

551897325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350434 (or 350426 counting only the distinct ones).

The product of its digits is 378000, while the sum is 45.

The square root of 551897325 is about 23492.4950782159. The cubic root of 551897325 is about 820.2623218831.

The spelling of 551897325 in words is "five hundred fifty-one million, eight hundred ninety-seven thousand, three hundred twenty-five".