53220903 has 4 divisors (see below), whose sum is σ = 70961208. Its totient is φ = 35480600.

The previous prime is 53220901. The next prime is 53220907. The reversal of 53220903 is 30902235.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53220903 - 2¹ = 53220901 is a prime.

It is a super-2 number, since 2×53220903² = 5664929032270818, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53220901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8870148 + ... + 8870153.

It is an arithmetic number, because the mean of its divisors is an integer number (17740302).

Almost surely, 2^53220903 is an apocalyptic number.

53220903 is a deficient number, since it is larger than the sum of its proper divisors (17740305).

53220903 is a wasteful number, since it uses less digits than its factorization.

53220903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17740304.

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 53220903 is about 7295.2657936500. The cubic root of 53220903 is about 376.1497229853.

The spelling of 53220903 in words is "fifty-three million, two hundred twenty thousand, nine hundred three".