55490403 has 8 divisors (see below), whose sum is σ = 76374016. Its totient is φ = 35800200.

The previous prime is 55490401. The next prime is 55490411. The reversal of 55490403 is 30409455.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55490403 - 2¹ = 55490401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55490401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298243 + ... + 298428.

It is an arithmetic number, because the mean of its divisors is an integer number (9546752).

Almost surely, 2^55490403 is an apocalyptic number.

55490403 is a deficient number, since it is larger than the sum of its proper divisors (20883613).

55490403 is a wasteful number, since it uses less digits than its factorization.

55490403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596705.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 55490403 is about 7449.1880765624. The cubic root of 55490403 is about 381.4221937201.

Adding to 55490403 its reverse (30409455), we get a palindrome (85899858).

The spelling of 55490403 in words is "fifty-five million, four hundred ninety thousand, four hundred three".