55133413 has 2 divisors, whose sum is σ = 55133414. Its totient is φ = 55133412.

The previous prime is 55133401. The next prime is 55133423. The reversal of 55133413 is 31433155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29398084 + 25735329 = 5422^2 + 5073^2 .

It is a cyclic number.

It is not a de Polignac number, because 55133413 - 2¹³ = 55125221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55133423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27566706 + 27566707.

It is an arithmetic number, because the mean of its divisors is an integer number (27566707).

Almost surely, 2^55133413 is an apocalyptic number.

It is an amenable number.

55133413 is a deficient number, since it is larger than the sum of its proper divisors (1).

55133413 is an equidigital number, since it uses as much as digits as its factorization.

55133413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2700, while the sum is 25.

The square root of 55133413 is about 7425.1877417342. The cubic root of 55133413 is about 380.6024906901.

Adding to 55133413 its reverse (31433155), we get a palindrome (86566568).

The spelling of 55133413 in words is "fifty-five million, one hundred thirty-three thousand, four hundred thirteen".