49172540 has 24 divisors (see below), whose sum is σ = 103805520. Its totient is φ = 19565568.

The previous prime is 49172537. The next prime is 49172549. The reversal of 49172540 is 4527194.

It is a happy number.

49172540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 49172497 and 49172506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49172549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2510 + ... + 10229.

It is an arithmetic number, because the mean of its divisors is an integer number (4325230).

Almost surely, 2^49172540 is an apocalyptic number.

It is an amenable number.

49172540 is an abundant number, since it is smaller than the sum of its proper divisors (54632980).

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

49172540 is a wasteful number, since it uses less digits than its factorization.

49172540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12941 (or 12939 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 49172540 is about 7012.3134556293. The cubic root of 49172540 is about 366.3595757510.

The spelling of 49172540 in words is "forty-nine million, one hundred seventy-two thousand, five hundred forty".