146550431 has 2 divisors, whose sum is σ = 146550432. Its totient is φ = 146550430.

The previous prime is 146550409. The next prime is 146550433. The reversal of 146550431 is 134055641.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (134055641) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 146550431 - 2¹⁰ = 146549407 is a prime.

It is a super-2 number, since 2×146550431² = 42954057652571522, which contains 22 as substring.

Together with 146550433, 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 = 146550394 and 146550403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146550433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73275215 + 73275216.

It is an arithmetic number, because the mean of its divisors is an integer number (73275216).

Almost surely, 2^146550431 is an apocalyptic number.

146550431 is a deficient number, since it is larger than the sum of its proper divisors (1).

146550431 is an equidigital number, since it uses as much as digits as its factorization.

146550431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 146550431 is about 12105.8015430619. The cubic root of 146550431 is about 527.2246412937.

The spelling of 146550431 in words is "one hundred forty-six million, five hundred fifty thousand, four hundred thirty-one".