145266553 has 2 divisors, whose sum is σ = 145266554. Its totient is φ = 145266552.

The previous prime is 145266523. The next prime is 145266557. The reversal of 145266553 is 355662541.

145266553 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 can be written as a sum of positive squares in only one way, i.e., 99460729 + 45805824 = 9973^2 + 6768^2 .

It is a cyclic number.

It is not a de Polignac number, because 145266553 - 2¹⁷ = 145135481 is a prime.

It is a super-2 number, since 2×145266553² = 42204742841003618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145266557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72633276 + 72633277.

It is an arithmetic number, because the mean of its divisors is an integer number (72633277).

Almost surely, 2^145266553 is an apocalyptic number.

It is an amenable number.

145266553 is a deficient number, since it is larger than the sum of its proper divisors (1).

145266553 is an equidigital number, since it uses as much as digits as its factorization.

145266553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108000, while the sum is 37.

The square root of 145266553 is about 12052.6575077864. The cubic root of 145266553 is about 525.6805119370.

The spelling of 145266553 in words is "one hundred forty-five million, two hundred sixty-six thousand, five hundred fifty-three".