145226377 has 2 divisors, whose sum is σ = 145226378. Its totient is φ = 145226376.

The previous prime is 145226339. The next prime is 145226399. The reversal of 145226377 is 773622541.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99920016 + 45306361 = 9996^2 + 6731^2 .

It is an emirp because it is prime and its reverse (773622541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145226377 - 2¹¹ = 145224329 is a prime.

It is a super-2 number, since 2×145226377² = 42181401153092258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145226077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72613188 + 72613189.

It is an arithmetic number, because the mean of its divisors is an integer number (72613189).

Almost surely, 2^145226377 is an apocalyptic number.

It is an amenable number.

145226377 is a deficient number, since it is larger than the sum of its proper divisors (1).

145226377 is an equidigital number, since it uses as much as digits as its factorization.

145226377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70560, while the sum is 37.

The square root of 145226377 is about 12050.9907061619. The cubic root of 145226377 is about 525.6320454292.

The spelling of 145226377 in words is "one hundred forty-five million, two hundred twenty-six thousand, three hundred seventy-seven".