551687051 has 2 divisors, whose sum is σ = 551687052. Its totient is φ = 551687050.

The previous prime is 551687027. The next prime is 551687089. The reversal of 551687051 is 150786155.

It is a happy number.

It is an a-pointer prime, because the next prime (551687089) can be obtained adding 551687051 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551687051 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 551686996 and 551687014.

It is not a weakly prime, because it can be changed into another prime (551687011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275843525 + 275843526.

It is an arithmetic number, because the mean of its divisors is an integer number (275843526).

Almost surely, 2^551687051 is an apocalyptic number.

551687051 is a deficient number, since it is larger than the sum of its proper divisors (1).

551687051 is an equidigital number, since it uses as much as digits as its factorization.

551687051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42000, while the sum is 38.

The square root of 551687051 is about 23488.0193077237. The cubic root of 551687051 is about 820.1581347808.

The spelling of 551687051 in words is "five hundred fifty-one million, six hundred eighty-seven thousand, fifty-one".