137550019 has 2 divisors, whose sum is σ = 137550020. Its totient is φ = 137550018.

The previous prime is 137550001. The next prime is 137550047. The reversal of 137550019 is 910055731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 137550019 - 2²⁵ = 103995587 is a prime.

It is a super-2 number, since 2×137550019² = 37840015453800722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (137550089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68775009 + 68775010.

It is an arithmetic number, because the mean of its divisors is an integer number (68775010).

Almost surely, 2^137550019 is an apocalyptic number.

137550019 is a deficient number, since it is larger than the sum of its proper divisors (1).

137550019 is an equidigital number, since it uses as much as digits as its factorization.

137550019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4725, while the sum is 31.

The square root of 137550019 is about 11728.1720229540. The cubic root of 137550019 is about 516.2026363456.

The spelling of 137550019 in words is "one hundred thirty-seven million, five hundred fifty thousand, nineteen".