55742633 has 4 divisors (see below), whose sum is σ = 55757568. Its totient is φ = 55727700.

The previous prime is 55742627. The next prime is 55742651. The reversal of 55742633 is 33624755.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 33624755 = 5 ⋅6724951.

It is a cyclic number.

It is not a de Polignac number, because 55742633 - 2⁸ = 55742377 is a prime.

It is a super-2 number, since 2×55742633² = 6214482267545378, which contains 22 as substring.

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 = 55742593 and 55742602.

It is not an unprimeable number, because it can be changed into a prime (55742623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3560 + ... + 11142.

It is an arithmetic number, because the mean of its divisors is an integer number (13939392).

Almost surely, 2^55742633 is an apocalyptic number.

It is an amenable number.

55742633 is a deficient number, since it is larger than the sum of its proper divisors (14935).

55742633 is an equidigital number, since it uses as much as digits as its factorization.

55742633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14934.

The product of its digits is 75600, while the sum is 35.

The square root of 55742633 is about 7466.0989144265. The cubic root of 55742633 is about 381.9992347599. Note that the first 3 decimals are identical.

The spelling of 55742633 in words is "fifty-five million, seven hundred forty-two thousand, six hundred thirty-three".