55534789 has 2 divisors, whose sum is σ = 55534790. Its totient is φ = 55534788.

The previous prime is 55534771. The next prime is 55534813. The reversal of 55534789 is 98743555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28836900 + 26697889 = 5370^2 + 5167^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55534789 is a prime.

It is a super-2 number, since 2×55534789² = 6168225578549042, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55534289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27767394 + 27767395.

It is an arithmetic number, because the mean of its divisors is an integer number (27767395).

Almost surely, 2^55534789 is an apocalyptic number.

It is an amenable number.

55534789 is a deficient number, since it is larger than the sum of its proper divisors (1).

55534789 is an equidigital number, since it uses as much as digits as its factorization.

55534789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 756000, while the sum is 46.

The square root of 55534789 is about 7452.1667318975. The cubic root of 55534789 is about 381.5238647155.

It can be divided in two parts, 555 and 34789, that added together give a square (35344 = 188²).

The spelling of 55534789 in words is "fifty-five million, five hundred thirty-four thousand, seven hundred eighty-nine".