55351319 has 2 divisors, whose sum is σ = 55351320. Its totient is φ = 55351318.

The previous prime is 55351291. The next prime is 55351321. The reversal of 55351319 is 91315355.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55351319 is a prime.

It is a super-2 number, since 2×55351319² = 6127537030079522, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 55351321, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55351349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27675659 + 27675660.

It is an arithmetic number, because the mean of its divisors is an integer number (27675660).

Almost surely, 2^55351319 is an apocalyptic number.

55351319 is a deficient number, since it is larger than the sum of its proper divisors (1).

55351319 is an equidigital number, since it uses as much as digits as its factorization.

55351319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10125, while the sum is 32.

The square root of 55351319 is about 7439.8467054100. The cubic root of 55351319 is about 381.1032550356.

The spelling of 55351319 in words is "fifty-five million, three hundred fifty-one thousand, three hundred nineteen".