49806551 has 4 divisors (see below), whose sum is σ = 51152712. Its totient is φ = 48460392.

The previous prime is 49806529. The next prime is 49806587. The reversal of 49806551 is 15560894.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 49806551 - 2²² = 45612247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49806521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 673025 + ... + 673098.

It is an arithmetic number, because the mean of its divisors is an integer number (12788178).

Almost surely, 2^49806551 is an apocalyptic number.

49806551 is a deficient number, since it is larger than the sum of its proper divisors (1346161).

49806551 is a wasteful number, since it uses less digits than its factorization.

49806551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1346160.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 49806551 is about 7057.3756453798. The cubic root of 49806551 is about 367.9274210008.

The spelling of 49806551 in words is "forty-nine million, eight hundred six thousand, five hundred fifty-one".