145027553 has 4 divisors (see below), whose sum is σ = 158211888. Its totient is φ = 131843220.

The previous prime is 145027543. The next prime is 145027583. The reversal of 145027553 is 355720541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 355720541 = 11 ⋅32338231.

It is a cyclic number.

It is not a de Polignac number, because 145027553 - 2⁸ = 145027297 is a prime.

It is a super-2 number, since 2×145027553² = 42065982258335618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145027543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6592151 + ... + 6592172.

It is an arithmetic number, because the mean of its divisors is an integer number (39552972).

Almost surely, 2^145027553 is an apocalyptic number.

It is an amenable number.

145027553 is a deficient number, since it is larger than the sum of its proper divisors (13184335).

145027553 is a wasteful number, since it uses less digits than its factorization.

145027553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13184334.

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 145027553 is about 12042.7386005011. The cubic root of 145027553 is about 525.3920614881.

The spelling of 145027553 in words is "one hundred forty-five million, twenty-seven thousand, five hundred fifty-three".