145381451 has 2 divisors, whose sum is σ = 145381452. Its totient is φ = 145381450.

The previous prime is 145381447. The next prime is 145381477. The reversal of 145381451 is 154183541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145381451 - 2² = 145381447 is a prime.

It is a super-2 number, since 2×145381451² = 42271532589730802, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145381051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72690725 + 72690726.

It is an arithmetic number, because the mean of its divisors is an integer number (72690726).

Almost surely, 2^145381451 is an apocalyptic number.

145381451 is a deficient number, since it is larger than the sum of its proper divisors (1).

145381451 is an equidigital number, since it uses as much as digits as its factorization.

145381451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9600, while the sum is 32.

The square root of 145381451 is about 12057.4230663106. The cubic root of 145381451 is about 525.8190703799.

The spelling of 145381451 in words is "one hundred forty-five million, three hundred eighty-one thousand, four hundred fifty-one".