513401100154 has 4 divisors (see below), whose sum is σ = 770101650234. Its totient is φ = 256700550076.

The previous prime is 513401100151. The next prime is 513401100187. The reversal of 513401100154 is 451001104315.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 451001104315 = 5 ⋅90200220863.

It can be written as a sum of positive squares in only one way, i.e., 269688069225 + 243713030929 = 519315^2 + 493673^2 .

It is not an unprimeable number, because it can be changed into a prime (513401100151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128350275037 + ... + 128350275040.

Almost surely, 2^513401100154 is an apocalyptic number.

513401100154 is a deficient number, since it is larger than the sum of its proper divisors (256700550080).

513401100154 is a wasteful number, since it uses less digits than its factorization.

513401100154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256700550079.

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 513401100154 its reverse (451001104315), we get a palindrome (964402204469).

The spelling of 513401100154 in words is "five hundred thirteen billion, four hundred one million, one hundred thousand, one hundred fifty-four".