145242551 has 2 divisors, whose sum is σ = 145242552. Its totient is φ = 145242550.

The previous prime is 145242511. The next prime is 145242553. The reversal of 145242551 is 155242541.

145242551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145242551 - 2²² = 141048247 is a prime.

Together with 145242553, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145242553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72621275 + 72621276.

It is an arithmetic number, because the mean of its divisors is an integer number (72621276).

Almost surely, 2^145242551 is an apocalyptic number.

145242551 is a deficient number, since it is larger than the sum of its proper divisors (1).

145242551 is an equidigital number, since it uses as much as digits as its factorization.

145242551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8000, while the sum is 29.

The square root of 145242551 is about 12051.6617526381. The cubic root of 145242551 is about 525.6515580854.

The spelling of 145242551 in words is "one hundred forty-five million, two hundred forty-two thousand, five hundred fifty-one".