55002403 has 2 divisors, whose sum is σ = 55002404. Its totient is φ = 55002402.

The previous prime is 55002373. The next prime is 55002413. The reversal of 55002403 is 30420055.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55002403 - 2¹³ = 54994211 is a prime.

It is a super-3 number, since 3×55002403³ (a number of 24 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (55002413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27501201 + 27501202.

It is an arithmetic number, because the mean of its divisors is an integer number (27501202).

Almost surely, 2^55002403 is an apocalyptic number.

55002403 is a deficient number, since it is larger than the sum of its proper divisors (1).

55002403 is an equidigital number, since it uses as much as digits as its factorization.

55002403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 55002403 is about 7416.3604955531. The cubic root of 55002403 is about 380.3007844772.

Adding to 55002403 its reverse (30420055), we get a palindrome (85422458).

The spelling of 55002403 in words is "fifty-five million, two thousand, four hundred three".