49251987 has 6 divisors (see below), whose sum is σ = 71141772. Its totient is φ = 32834652.

The previous prime is 49251959. The next prime is 49252001. The reversal of 49251987 is 78915294.

It is not a de Polignac number, because 49251987 - 2¹⁴ = 49235603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49251187) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2736213 + ... + 2736230.

It is an arithmetic number, because the mean of its divisors is an integer number (11856962).

Almost surely, 2^49251987 is an apocalyptic number.

49251987 is a deficient number, since it is larger than the sum of its proper divisors (21889785).

49251987 is a wasteful number, since it uses less digits than its factorization.

49251987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5472449 (or 5472446 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 49251987 is about 7017.9759902696. The cubic root of 49251987 is about 366.5567759761.

The spelling of 49251987 in words is "forty-nine million, two hundred fifty-one thousand, nine hundred eighty-seven".