55340147 has 2 divisors, whose sum is σ = 55340148. Its totient is φ = 55340146.

The previous prime is 55340143. The next prime is 55340213. The reversal of 55340147 is 74104355.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55340147 - 2² = 55340143 is a prime.

It is not a weakly prime, because it can be changed into another prime (55340143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27670073 + 27670074.

It is an arithmetic number, because the mean of its divisors is an integer number (27670074).

Almost surely, 2^55340147 is an apocalyptic number.

55340147 is a deficient number, since it is larger than the sum of its proper divisors (1).

55340147 is an equidigital number, since it uses as much as digits as its factorization.

55340147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 55340147 is about 7439.0958455984. The cubic root of 55340147 is about 381.0776129364.

The spelling of 55340147 in words is "fifty-five million, three hundred forty thousand, one hundred forty-seven".