55311007 has 2 divisors, whose sum is σ = 55311008. Its totient is φ = 55311006.

The previous prime is 55311001. The next prime is 55311017. The reversal of 55311007 is 70011355.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55311007 - 2²³ = 46922399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55311001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27655503 + 27655504.

It is an arithmetic number, because the mean of its divisors is an integer number (27655504).

Almost surely, 2^55311007 is an apocalyptic number.

55311007 is a deficient number, since it is larger than the sum of its proper divisors (1).

55311007 is an equidigital number, since it uses as much as digits as its factorization.

55311007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 525, while the sum is 22.

The square root of 55311007 is about 7437.1370163525. The cubic root of 55311007 is about 381.0107142386.

The spelling of 55311007 in words is "fifty-five million, three hundred eleven thousand, seven".