55434397 has 2 divisors, whose sum is σ = 55434398. Its totient is φ = 55434396.

The previous prime is 55434383. The next prime is 55434403. The reversal of 55434397 is 79343455.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33802596 + 21631801 = 5814^2 + 4651^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55434397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55434307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27717198 + 27717199.

It is an arithmetic number, because the mean of its divisors is an integer number (27717199).

Almost surely, 2^55434397 is an apocalyptic number.

It is an amenable number.

55434397 is a deficient number, since it is larger than the sum of its proper divisors (1).

55434397 is an equidigital number, since it uses as much as digits as its factorization.

55434397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 40.

The square root of 55434397 is about 7445.4279259153. The cubic root of 55434397 is about 381.2938284469.

The spelling of 55434397 in words is "fifty-five million, four hundred thirty-four thousand, three hundred ninety-seven".