145151506 has 4 divisors (see below), whose sum is σ = 217727262. Its totient is φ = 72575752.

The previous prime is 145151497. The next prime is 145151509. The reversal of 145151506 is 605151541.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 140635881 + 4515625 = 11859^2 + 2125^2 .

It is not an unprimeable number, because it can be changed into a prime (145151509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36287875 + ... + 36287878.

Almost surely, 2^145151506 is an apocalyptic number.

145151506 is a deficient number, since it is larger than the sum of its proper divisors (72575756).

145151506 is an equidigital number, since it uses as much as digits as its factorization.

145151506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72575755.

The product of its (nonzero) digits is 3000, while the sum is 28.

The square root of 145151506 is about 12047.8838805825. The cubic root of 145151506 is about 525.5417005881.

The spelling of 145151506 in words is "one hundred forty-five million, one hundred fifty-one thousand, five hundred six".