145531210 has 32 divisors (see below), whose sum is σ = 286483392. Its totient is φ = 52788480.

The previous prime is 145531157. The next prime is 145531219. The reversal of 145531210 is 12135541.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (145531219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49954 + ... + 52786.

It is an arithmetic number, because the mean of its divisors is an integer number (8952606).

Almost surely, 2^145531210 is an apocalyptic number.

145531210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145531210 is a deficient number, since it is larger than the sum of its proper divisors (140952182).

145531210 is a wasteful number, since it uses less digits than its factorization.

145531210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3318.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 145531210 is about 12063.6317085694. The cubic root of 145531210 is about 525.9995590507. Note that the first 3 decimals are identical.

Adding to 145531210 its reverse (12135541), we get a palindrome (157666751).

The spelling of 145531210 in words is "one hundred forty-five million, five hundred thirty-one thousand, two hundred ten".