137550431 has 2 divisors, whose sum is σ = 137550432. Its totient is φ = 137550430.

The previous prime is 137550403. The next prime is 137550433. The reversal of 137550431 is 134055731.

It is a strong prime.

It is an emirp because it is prime and its reverse (134055731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 137550431 - 2¹⁸ = 137288287 is a prime.

It is a super-2 number, since 2×137550431² = 37840242136571522, which contains 22 as substring.

Together with 137550433, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 137550394 and 137550403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137550433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68775215 + 68775216.

It is an arithmetic number, because the mean of its divisors is an integer number (68775216).

Almost surely, 2^137550431 is an apocalyptic number.

137550431 is a deficient number, since it is larger than the sum of its proper divisors (1).

137550431 is an equidigital number, since it uses as much as digits as its factorization.

137550431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 137550431 is about 11728.1895874854. The cubic root of 137550431 is about 516.2031517345.

The spelling of 137550431 in words is "one hundred thirty-seven million, five hundred fifty thousand, four hundred thirty-one".