50136540 has 24 divisors (see below), whose sum is σ = 140382480. Its totient is φ = 13369728.

The previous prime is 50136539. The next prime is 50136557. The reversal of 50136540 is 4563105.

50136540 = 1100² + 1101² + ... + 1139².

It is a self number, because there is not a number n which added to its sum of digits gives 50136540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417745 + ... + 417864.

It is an arithmetic number, because the mean of its divisors is an integer number (5849270).

Almost surely, 2^50136540 is an apocalyptic number.

It is an amenable number.

50136540 is an abundant number, since it is smaller than the sum of its proper divisors (90245940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

50136540 is a wasteful number, since it uses less digits than its factorization.

50136540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835621 (or 835619 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 50136540 is about 7080.7160654838. The cubic root of 50136540 is about 368.7381901800.

Adding to 50136540 its reverse (4563105), we get a palindrome (54699645).

The spelling of 50136540 in words is "fifty million, one hundred thirty-six thousand, five hundred forty".