55783433 has 2 divisors, whose sum is σ = 55783434. Its totient is φ = 55783432.

The previous prime is 55783397. The next prime is 55783447. The reversal of 55783433 is 33438755.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45873529 + 9909904 = 6773^2 + 3148^2 .

It is a cyclic number.

It is not a de Polignac number, because 55783433 - 2¹⁰ = 55782409 is a prime.

It is a super-2 number, since 2×55783433² = 6223582794530978, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55786433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27891716 + 27891717.

It is an arithmetic number, because the mean of its divisors is an integer number (27891717).

Almost surely, 2^55783433 is an apocalyptic number.

It is an amenable number.

55783433 is a deficient number, since it is larger than the sum of its proper divisors (1).

55783433 is an equidigital number, since it uses as much as digits as its factorization.

55783433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 38.

The square root of 55783433 is about 7468.8307652537. The cubic root of 55783433 is about 382.0924116035.

The spelling of 55783433 in words is "fifty-five million, seven hundred eighty-three thousand, four hundred thirty-three".