2521133416 has 16 divisors (see below), whose sum is σ = 4804619940. Its totient is φ = 1239901440.

The previous prime is 2521133401. The next prime is 2521133423. The reversal of 2521133416 is 6143311252.

It can be written as a sum of positive squares in 2 ways, for example, as 2345464900 + 175668516 = 48430^2 + 13254^2 .

It is a super-2 number, since 2×2521133416² = 12712227402543658112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2582641 + ... + 2583616.

Almost surely, 2^2521133416 is an apocalyptic number.

It is an amenable number.

2521133416 is a deficient number, since it is larger than the sum of its proper divisors (2283486524).

2521133416 is a wasteful number, since it uses less digits than its factorization.

2521133416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5166324 (or 5166320 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 2521133416 is about 50210.8894165399. The cubic root of 2521133416 is about 1361.0224102535.

Adding to 2521133416 its reverse (6143311252), we get a palindrome (8664444668).

The spelling of 2521133416 in words is "two billion, five hundred twenty-one million, one hundred thirty-three thousand, four hundred sixteen".