49555540 has 12 divisors (see below), whose sum is σ = 104066676. Its totient is φ = 19822208.

The previous prime is 49555537. The next prime is 49555567. The reversal of 49555540 is 4555594.

It can be written as a sum of positive squares in 2 ways, for example, as 12759184 + 36796356 = 3572^2 + 6066^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 49555540.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1238869 + ... + 1238908.

It is an arithmetic number, because the mean of its divisors is an integer number (8672223).

Almost surely, 2^49555540 is an apocalyptic number.

It is an amenable number.

49555540 is an abundant number, since it is smaller than the sum of its proper divisors (54511136).

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

49555540 is a wasteful number, since it uses less digits than its factorization.

49555540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2477786 (or 2477784 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 37.

The square root of 49555540 is about 7039.5695891155. The cubic root of 49555540 is about 367.3082962094.

The spelling of 49555540 in words is "forty-nine million, five hundred fifty-five thousand, five hundred forty".