49665951 has 36 divisors (see below), whose sum is σ = 76822200. Its totient is φ = 30881088.

The previous prime is 49665949. The next prime is 49665953. The reversal of 49665951 is 15956694.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (49665949) and next prime (49665953).

It is not a de Polignac number, because 49665951 - 2¹ = 49665949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 49665897 and 49665906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49665953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 357240 + ... + 357378.

It is an arithmetic number, because the mean of its divisors is an integer number (2133950).

Almost surely, 2^49665951 is an apocalyptic number.

49665951 is a deficient number, since it is larger than the sum of its proper divisors (27156249).

49665951 is a wasteful number, since it uses less digits than its factorization.

49665951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248 (or 208 counting only the distinct ones).

The product of its digits is 291600, while the sum is 45.

The square root of 49665951 is about 7047.4073956314. The cubic root of 49665951 is about 367.5808845982.

The spelling of 49665951 in words is "forty-nine million, six hundred sixty-five thousand, nine hundred fifty-one".