55125533 has 4 divisors (see below), whose sum is σ = 56903808. Its totient is φ = 53347260.

The previous prime is 55125487. The next prime is 55125547. The reversal of 55125533 is 33552155.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55125533 - 2¹⁴ = 55109149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 55125496 and 55125505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55125583) 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, 889091 + ... + 889152.

It is an arithmetic number, because the mean of its divisors is an integer number (14225952).

Almost surely, 2^55125533 is an apocalyptic number.

It is an amenable number.

55125533 is a deficient number, since it is larger than the sum of its proper divisors (1778275).

55125533 is a wasteful number, since it uses less digits than its factorization.

55125533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1778274.

The product of its digits is 11250, while the sum is 29.

The square root of 55125533 is about 7424.6570964591. The cubic root of 55125533 is about 380.5843571581.

Adding to 55125533 its reverse (33552155), we get a palindrome (88677688).

The spelling of 55125533 in words is "fifty-five million, one hundred twenty-five thousand, five hundred thirty-three".