55305501 has 16 divisors (see below), whose sum is σ = 77364096. Its totient is φ = 35076096.

The previous prime is 55305493. The next prime is 55305517. The reversal of 55305501 is 10550355.

It is not a de Polignac number, because 55305501 - 2³ = 55305493 is a prime.

It is a super-2 number, since 2×55305501² = 6117396881722002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55306501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11241 + ... + 15393.

It is an arithmetic number, because the mean of its divisors is an integer number (4835256).

Almost surely, 2^55305501 is an apocalyptic number.

It is an amenable number.

55305501 is a deficient number, since it is larger than the sum of its proper divisors (22058595).

55305501 is a wasteful number, since it uses less digits than its factorization.

55305501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4372.

The product of its (nonzero) digits is 1875, while the sum is 24.

The square root of 55305501 is about 7436.7668378133. The cubic root of 55305501 is about 380.9980710975.

Adding to 55305501 its reverse (10550355), we get a palindrome (65855856).

The spelling of 55305501 in words is "fifty-five million, three hundred five thousand, five hundred one".