555661351 has 32 divisors (see below), whose sum is σ = 672122880. Its totient is φ = 449529696.

The previous prime is 555661349. The next prime is 555661357. The reversal of 555661351 is 153166555.

It is not a de Polignac number, because 555661351 - 2¹ = 555661349 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 555661351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555661357) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1189620 + ... + 1190086.

It is an arithmetic number, because the mean of its divisors is an integer number (21003840).

Almost surely, 2^555661351 is an apocalyptic number.

555661351 is a deficient number, since it is larger than the sum of its proper divisors (116461529).

555661351 is a wasteful number, since it uses less digits than its factorization.

555661351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643.

The product of its digits is 67500, while the sum is 37.

The square root of 555661351 is about 23572.4701930027. The cubic root of 555661351 is about 822.1228709319.

The spelling of 555661351 in words is "five hundred fifty-five million, six hundred sixty-one thousand, three hundred fifty-one".