145396553 has 2 divisors, whose sum is σ = 145396554. Its totient is φ = 145396552.

The previous prime is 145396549. The next prime is 145396567. The reversal of 145396553 is 355693541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118439689 + 26956864 = 10883^2 + 5192^2 .

It is a cyclic number.

It is not a de Polignac number, because 145396553 - 2² = 145396549 is a prime.

It is a super-2 number, since 2×145396553² = 42280315248563618, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145396553.

It is not a weakly prime, because it can be changed into another prime (145396523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72698276 + 72698277.

It is an arithmetic number, because the mean of its divisors is an integer number (72698277).

Almost surely, 2^145396553 is an apocalyptic number.

It is an amenable number.

145396553 is a deficient number, since it is larger than the sum of its proper divisors (1).

145396553 is an equidigital number, since it uses as much as digits as its factorization.

145396553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 243000, while the sum is 41.

The square root of 145396553 is about 12058.0493032663. The cubic root of 145396553 is about 525.8372768397.

The spelling of 145396553 in words is "one hundred forty-five million, three hundred ninety-six thousand, five hundred fifty-three".