145098553 has 4 divisors (see below), whose sum is σ = 153633780. Its totient is φ = 136563328.

The previous prime is 145098533. The next prime is 145098557. The reversal of 145098553 is 355890541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 355890541 = 151 ⋅2356891.

It can be written as a sum of positive squares in 2 ways, for example, as 46949904 + 98148649 = 6852^2 + 9907^2 .

It is a cyclic number.

It is not a de Polignac number, because 145098553 - 2⁵ = 145098521 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145098557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4267588 + ... + 4267621.

It is an arithmetic number, because the mean of its divisors is an integer number (38408445).

Almost surely, 2^145098553 is an apocalyptic number.

It is an amenable number.

145098553 is a deficient number, since it is larger than the sum of its proper divisors (8535227).

145098553 is an equidigital number, since it uses as much as digits as its factorization.

145098553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8535226.

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

The square root of 145098553 is about 12045.6860742757. The cubic root of 145098553 is about 525.4777848556.

The spelling of 145098553 in words is "one hundred forty-five million, ninety-eight thousand, five hundred fifty-three".