55401333 has 16 divisors (see below), whose sum is σ = 79779840. Its totient is φ = 33994944.

The previous prime is 55401299. The next prime is 55401383. The reversal of 55401333 is 33310455.

It is a happy number.

It is not a de Polignac number, because 55401333 - 2⁸ = 55401077 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55401383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13083 + ... + 16791.

It is an arithmetic number, because the mean of its divisors is an integer number (4986240).

Almost surely, 2^55401333 is an apocalyptic number.

It is an amenable number.

55401333 is a deficient number, since it is larger than the sum of its proper divisors (24378507).

55401333 is a wasteful number, since it uses less digits than its factorization.

55401333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4108.

The product of its (nonzero) digits is 2700, while the sum is 24.

The square root of 55401333 is about 7443.2071716431. The cubic root of 55401333 is about 381.2180054491.

Adding to 55401333 its reverse (33310455), we get a palindrome (88711788).

The spelling of 55401333 in words is "fifty-five million, four hundred one thousand, three hundred thirty-three".