6550423157 has 2 divisors, whose sum is σ = 6550423158. Its totient is φ = 6550423156.

The previous prime is 6550423141. The next prime is 6550423181. The reversal of 6550423157 is 7513240556.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3809481841 + 2740941316 = 61721^2 + 52354^2 .

It is a cyclic number.

It is not a de Polignac number, because 6550423157 - 2⁴ = 6550423141 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6550423157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6550423657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3275211578 + 3275211579.

It is an arithmetic number, because the mean of its divisors is an integer number (3275211579).

Almost surely, 2^6550423157 is an apocalyptic number.

It is an amenable number.

6550423157 is a deficient number, since it is larger than the sum of its proper divisors (1).

6550423157 is an equidigital number, since it uses as much as digits as its factorization.

6550423157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126000, while the sum is 38.

The square root of 6550423157 is about 80934.6845116480. The cubic root of 6550423157 is about 1871.0689225522.

The spelling of 6550423157 in words is "six billion, five hundred fifty million, four hundred twenty-three thousand, one hundred fifty-seven".