49851220 has 24 divisors (see below), whose sum is σ = 104832000. Its totient is φ = 19912992.

The previous prime is 49851209. The next prime is 49851223. The reversal of 49851220 is 2215894.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49851223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19581 + ... + 21979.

It is an arithmetic number, because the mean of its divisors is an integer number (4368000).

Almost surely, 2^49851220 is an apocalyptic number.

It is an amenable number.

49851220 is an abundant number, since it is smaller than the sum of its proper divisors (54980780).

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

49851220 is a wasteful number, since it uses less digits than its factorization.

49851220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3447 (or 3445 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 49851220 is about 7060.5396394327. The cubic root of 49851220 is about 368.0373800246.

The spelling of 49851220 in words is "forty-nine million, eight hundred fifty-one thousand, two hundred twenty".