551240045 has 12 divisors (see below), whose sum is σ = 702689844. Its totient is φ = 415050240.

The previous prime is 551240029. The next prime is 551240069. The reversal of 551240045 is 540042155.

It can be written as a sum of positive squares in 6 ways, for example, as 147792649 + 403447396 = 12157^2 + 20086^2 .

It is not a de Polignac number, because 551240045 - 2⁴ = 551240029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 551239996 and 551240023.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 189296 + ... + 192185.

It is an arithmetic number, because the mean of its divisors is an integer number (58557487).

Almost surely, 2^551240045 is an apocalyptic number.

It is an amenable number.

551240045 is a deficient number, since it is larger than the sum of its proper divisors (151449799).

551240045 is a wasteful number, since it uses less digits than its factorization.

551240045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381520 (or 381503 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 551240045 is about 23478.5017622505. The cubic root of 551240045 is about 819.9365631076.

The spelling of 551240045 in words is "five hundred fifty-one million, two hundred forty thousand, forty-five".