55403371 has 2 divisors, whose sum is σ = 55403372. Its totient is φ = 55403370.

The previous prime is 55403351. The next prime is 55403429. The reversal of 55403371 is 17330455.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55403371 - 2⁵ = 55403339 is a prime.

It is not a weakly prime, because it can be changed into another prime (55403321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27701685 + 27701686.

It is an arithmetic number, because the mean of its divisors is an integer number (27701686).

Almost surely, 2^55403371 is an apocalyptic number.

55403371 is a deficient number, since it is larger than the sum of its proper divisors (1).

55403371 is an equidigital number, since it uses as much as digits as its factorization.

55403371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 55403371 is about 7443.3440737346. The cubic root of 55403371 is about 381.2226799020. Note that the first 3 decimals are identical.

It can be divided in two parts, 5540 and 3371, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 55403371 in words is "fifty-five million, four hundred three thousand, three hundred seventy-one".