145413531 has 12 divisors (see below), whose sum is σ = 210548520. Its totient is φ = 96708480.

The previous prime is 145413523. The next prime is 145413533. The reversal of 145413531 is 135314541.

It is a happy number.

It is not a de Polignac number, because 145413531 - 2³ = 145413523 is a prime.

It is a super-2 number, since 2×145413531² = 42290189995775922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145413495 and 145413504.

It is not an unprimeable number, because it can be changed into a prime (145413533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15510 + ... + 23051.

It is an arithmetic number, because the mean of its divisors is an integer number (17545710).

Almost surely, 2^145413531 is an apocalyptic number.

145413531 is a deficient number, since it is larger than the sum of its proper divisors (65134989).

145413531 is a wasteful number, since it uses less digits than its factorization.

145413531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38986 (or 38983 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 145413531 is about 12058.7532937696. The cubic root of 145413531 is about 525.8577434364.

The spelling of 145413531 in words is "one hundred forty-five million, four hundred thirteen thousand, five hundred thirty-one".