145946551 has 2 divisors, whose sum is σ = 145946552. Its totient is φ = 145946550.

The previous prime is 145946539. The next prime is 145946597. The reversal of 145946551 is 155649541.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (155649541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145946551 - 2⁵ = 145946519 is a prime.

It is a Chen prime.

It is equal to p_8228893 and since 145946551 and 8228893 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145946351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72973275 + 72973276.

It is an arithmetic number, because the mean of its divisors is an integer number (72973276).

Almost surely, 2^145946551 is an apocalyptic number.

145946551 is a deficient number, since it is larger than the sum of its proper divisors (1).

145946551 is an equidigital number, since it uses as much as digits as its factorization.

145946551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108000, while the sum is 40.

The square root of 145946551 is about 12080.8340357775. The cubic root of 145946551 is about 526.4994785691.

The spelling of 145946551 in words is "one hundred forty-five million, nine hundred forty-six thousand, five hundred fifty-one".