55133401 has 2 divisors, whose sum is σ = 55133402. Its totient is φ = 55133400.

The previous prime is 55133387. The next prime is 55133413. The reversal of 55133401 is 10433155.

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., 43877376 + 11256025 = 6624^2 + 3355^2 .

It is a cyclic number.

It is not a de Polignac number, because 55133401 - 2¹⁷ = 55002329 is a prime.

It is not a weakly prime, because it can be changed into another prime (55133471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27566700 + 27566701.

It is an arithmetic number, because the mean of its divisors is an integer number (27566701).

Almost surely, 2^55133401 is an apocalyptic number.

It is an amenable number.

55133401 is a deficient number, since it is larger than the sum of its proper divisors (1).

55133401 is an equidigital number, since it uses as much as digits as its factorization.

55133401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 55133401 is about 7425.1869336738. The cubic root of 55133401 is about 380.6024630769.

Adding to 55133401 its reverse (10433155), we get a palindrome (65566556).

The spelling of 55133401 in words is "fifty-five million, one hundred thirty-three thousand, four hundred one".