145520535 has 32 divisors (see below), whose sum is σ = 238505472. Its totient is φ = 75743360.

The previous prime is 145520503. The next prime is 145520539. The reversal of 145520535 is 535025541.

It is a happy number.

It is not a de Polignac number, because 145520535 - 2⁵ = 145520503 is a prime.

It is a super-2 number, since 2×145520535² = 42352452213372450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145520539) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113317 + ... + 114593.

It is an arithmetic number, because the mean of its divisors is an integer number (7453296).

Almost surely, 2^145520535 is an apocalyptic number.

145520535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145520535 is a deficient number, since it is larger than the sum of its proper divisors (92984937).

145520535 is a wasteful number, since it uses less digits than its factorization.

145520535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1463.

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 145520535 is about 12063.1892549193. The cubic root of 145520535 is about 525.9866977027.

The spelling of 145520535 in words is "one hundred forty-five million, five hundred twenty thousand, five hundred thirty-five".