145111553 has 2 divisors, whose sum is σ = 145111554. Its totient is φ = 145111552.

The previous prime is 145111537. The next prime is 145111573. The reversal of 145111553 is 355111541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88981489 + 56130064 = 9433^2 + 7492^2 .

It is a cyclic number.

It is not a de Polignac number, because 145111553 - 2⁴ = 145111537 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145111523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72555776 + 72555777.

It is an arithmetic number, because the mean of its divisors is an integer number (72555777).

Almost surely, 2^145111553 is an apocalyptic number.

It is an amenable number.

145111553 is a deficient number, since it is larger than the sum of its proper divisors (1).

145111553 is an equidigital number, since it uses as much as digits as its factorization.

145111553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1500, while the sum is 26.

The square root of 145111553 is about 12046.2256744592. The cubic root of 145111553 is about 525.4934776544.

The spelling of 145111553 in words is "one hundred forty-five million, one hundred eleven thousand, five hundred fifty-three".