515440149 has 8 divisors (see below), whose sum is σ = 785432640. Its totient is φ = 294537216.

The previous prime is 515440129. The next prime is 515440199. The reversal of 515440149 is 941044515.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 515440149 - 2¹⁷ = 515309077 is a prime.

It is a super-2 number, since 2×515440149² = 531357094402284402, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515440129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12272364 + ... + 12272405.

It is an arithmetic number, because the mean of its divisors is an integer number (98179080).

Almost surely, 2^515440149 is an apocalyptic number.

It is an amenable number.

515440149 is a deficient number, since it is larger than the sum of its proper divisors (269992491).

515440149 is a wasteful number, since it uses less digits than its factorization.

515440149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24544779.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 515440149 is about 22703.3070058086. The cubic root of 515440149 is about 801.7877462491.

The spelling of 515440149 in words is "five hundred fifteen million, four hundred forty thousand, one hundred forty-nine".