55225523 has 4 divisors (see below), whose sum is σ = 56267568. Its totient is φ = 54183480.

The previous prime is 55225463. The next prime is 55225543. The reversal of 55225523 is 32552255.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32552255 = 5 ⋅6510451.

It is a cyclic number.

It is not a de Polignac number, because 55225523 - 2¹⁶ = 55159987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55225543) 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, 520943 + ... + 521048.

It is an arithmetic number, because the mean of its divisors is an integer number (14066892).

Almost surely, 2^55225523 is an apocalyptic number.

55225523 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

55225523 is a deficient number, since it is larger than the sum of its proper divisors (1042045).

55225523 is a wasteful number, since it uses less digits than its factorization.

55225523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042044.

The product of its digits is 15000, while the sum is 29.

The square root of 55225523 is about 7431.3876900617. The cubic root of 55225523 is about 380.8143270854.

Adding to 55225523 its reverse (32552255), we get a palindrome (87777778).

The spelling of 55225523 in words is "fifty-five million, two hundred twenty-five thousand, five hundred twenty-three".