154512013 has 4 divisors (see below), whose sum is σ = 157427388. Its totient is φ = 151596640.

The previous prime is 154511993. The next prime is 154512023. The reversal of 154512013 is 310215451.

It is a happy number.

154512013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 91738084 + 62773929 = 9578^2 + 7923^2 .

It is a cyclic number.

It is not a de Polignac number, because 154512013 - 2²¹ = 152414861 is a prime.

It is a super-2 number, since 2×154512013² = 47747924322624338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154512023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1457608 + ... + 1457713.

It is an arithmetic number, because the mean of its divisors is an integer number (39356847).

Almost surely, 2^154512013 is an apocalyptic number.

It is an amenable number.

154512013 is a deficient number, since it is larger than the sum of its proper divisors (2915375).

154512013 is an equidigital number, since it uses as much as digits as its factorization.

154512013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2915374.

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

The square root of 154512013 is about 12430.2861189918. The cubic root of 154512013 is about 536.6042197227.

Adding to 154512013 its reverse (310215451), we get a palindrome (464727464).

The spelling of 154512013 in words is "one hundred fifty-four million, five hundred twelve thousand, thirteen".