55263505 has 16 divisors (see below), whose sum is σ = 72503424. Its totient is φ = 40103680.

The previous prime is 55263497. The next prime is 55263511. The reversal of 55263505 is 50536255.

It is not a de Polignac number, because 55263505 - 2³ = 55263497 is a prime.

It is a super-3 number, since 3×55263505³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34809 + ... + 36361.

It is an arithmetic number, because the mean of its divisors is an integer number (4531464).

Almost surely, 2^55263505 is an apocalyptic number.

55263505 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55263505 is a deficient number, since it is larger than the sum of its proper divisors (17239919).

55263505 is a wasteful number, since it uses less digits than its factorization.

55263505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2216.

The product of its (nonzero) digits is 22500, while the sum is 31.

The square root of 55263505 is about 7433.9427627606. The cubic root of 55263505 is about 380.9016102491.

The spelling of 55263505 in words is "fifty-five million, two hundred sixty-three thousand, five hundred five".