55190029 has 2 divisors, whose sum is σ = 55190030. Its totient is φ = 55190028.

The previous prime is 55190021. The next prime is 55190071. The reversal of 55190029 is 92009155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48930025 + 6260004 = 6995^2 + 2502^2 .

It is a cyclic number.

It is not a de Polignac number, because 55190029 - 2³ = 55190021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55190021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27595014 + 27595015.

It is an arithmetic number, because the mean of its divisors is an integer number (27595015).

Almost surely, 2^55190029 is an apocalyptic number.

It is an amenable number.

55190029 is a deficient number, since it is larger than the sum of its proper divisors (1).

55190029 is an equidigital number, since it uses as much as digits as its factorization.

55190029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4050, while the sum is 31.

The square root of 55190029 is about 7428.9991923542. Note that the first 3 decimals coincide. The cubic root of 55190029 is about 380.7327251993.

The spelling of 55190029 in words is "fifty-five million, one hundred ninety thousand, twenty-nine".