55451603 has 8 divisors (see below), whose sum is σ = 59519088. Its totient is φ = 51473664.

The previous prime is 55451581. The next prime is 55451609. The reversal of 55451603 is 30615455.

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

It is a cyclic number.

It is not a de Polignac number, because 55451603 - 2¹⁰ = 55450579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55451609) 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, 21101 + ... + 23582.

It is an arithmetic number, because the mean of its divisors is an integer number (7439886).

Almost surely, 2^55451603 is an apocalyptic number.

55451603 is a deficient number, since it is larger than the sum of its proper divisors (4067485).

55451603 is a wasteful number, since it uses less digits than its factorization.

55451603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44773.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 55451603 is about 7446.5833104854. The cubic root of 55451603 is about 381.3332736489. Note that the first 3 decimals are identical.

The spelling of 55451603 in words is "fifty-five million, four hundred fifty-one thousand, six hundred three".