55019413 has 2 divisors, whose sum is σ = 55019414. Its totient is φ = 55019412.

The previous prime is 55019401. The next prime is 55019423. The reversal of 55019413 is 31491055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40934404 + 14085009 = 6398^2 + 3753^2 .

It is a cyclic number.

It is not a de Polignac number, because 55019413 - 2¹⁷ = 54888341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55019423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27509706 + 27509707.

It is an arithmetic number, because the mean of its divisors is an integer number (27509707).

Almost surely, 2^55019413 is an apocalyptic number.

It is an amenable number.

55019413 is a deficient number, since it is larger than the sum of its proper divisors (1).

55019413 is an equidigital number, since it uses as much as digits as its factorization.

55019413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 55019413 is about 7417.5071958172. The cubic root of 55019413 is about 380.3399842772.

The spelling of 55019413 in words is "fifty-five million, nineteen thousand, four hundred thirteen".