551138627 has 8 divisors (see below), whose sum is σ = 619340064. Its totient is φ = 486623808.

The previous prime is 551138617. The next prime is 551138639. The reversal of 551138627 is 726831155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 551138627 - 2⁶ = 551138563 is a prime.

It is a super-3 number, since 3×551138627³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551138617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 921338 + ... + 921935.

It is an arithmetic number, because the mean of its divisors is an integer number (77417508).

Almost surely, 2^551138627 is an apocalyptic number.

551138627 is a deficient number, since it is larger than the sum of its proper divisors (68201437).

551138627 is a wasteful number, since it uses less digits than its factorization.

551138627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1843309.

The product of its digits is 50400, while the sum is 38.

The square root of 551138627 is about 23476.3418572826. The cubic root of 551138627 is about 819.8862756225.

The spelling of 551138627 in words is "five hundred fifty-one million, one hundred thirty-eight thousand, six hundred twenty-seven".