55051603 has 2 divisors, whose sum is σ = 55051604. Its totient is φ = 55051602.

The previous prime is 55051583. The next prime is 55051631. The reversal of 55051603 is 30615055.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55051603 - 2⁹ = 55051091 is a prime.

It is not a weakly prime, because it can be changed into another prime (55051663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27525801 + 27525802.

It is an arithmetic number, because the mean of its divisors is an integer number (27525802).

Almost surely, 2^55051603 is an apocalyptic number.

55051603 is a deficient number, since it is larger than the sum of its proper divisors (1).

55051603 is an equidigital number, since it uses as much as digits as its factorization.

55051603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 55051603 is about 7419.6767449802. The cubic root of 55051603 is about 380.4141445085.

Adding to 55051603 its reverse (30615055), we get a palindrome (85666658).

The spelling of 55051603 in words is "fifty-five million, fifty-one thousand, six hundred three".