2051540252 has 6 divisors (see below), whose sum is σ = 3590195448. Its totient is φ = 1025770124.

The previous prime is 2051540237. The next prime is 2051540273. The reversal of 2051540252 is 2520451502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256442528 + ... + 256442535.

It is an arithmetic number, because the mean of its divisors is an integer number (598365908).

Almost surely, 2^2051540252 is an apocalyptic number.

It is an amenable number.

2051540252 is a deficient number, since it is larger than the sum of its proper divisors (1538655196).

2051540252 is a wasteful number, since it uses less digits than its factorization.

2051540252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512885067 (or 512885065 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 2051540252 is about 45293.9317348362. The cubic root of 2051540252 is about 1270.6521650972.

Adding to 2051540252 its reverse (2520451502), we get a palindrome (4571991754).

The spelling of 2051540252 in words is "two billion, fifty-one million, five hundred forty thousand, two hundred fifty-two".