49691555 has 32 divisors (see below), whose sum is σ = 65736960. Its totient is φ = 35925120.

The previous prime is 49691507. The next prime is 49691557. The reversal of 49691555 is 55519694.

It is not a de Polignac number, because 49691555 - 2⁶ = 49691491 is a prime.

It is a plaindrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (49691557) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 235400 + ... + 235610.

It is an arithmetic number, because the mean of its divisors is an integer number (2054280).

Almost surely, 2^49691555 is an apocalyptic number.

49691555 is a deficient number, since it is larger than the sum of its proper divisors (16045405).

49691555 is a wasteful number, since it uses less digits than its factorization.

49691555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339.

The product of its digits is 243000, while the sum is 44.

The square root of 49691555 is about 7049.2237161265. The cubic root of 49691555 is about 367.6440393616.

The spelling of 49691555 in words is "forty-nine million, six hundred ninety-one thousand, five hundred fifty-five".