49743561 has 32 divisors (see below), whose sum is σ = 80109568. Its totient is φ = 26853120.

The previous prime is 49743553. The next prime is 49743571. The reversal of 49743561 is 16534794.

It is not a de Polignac number, because 49743561 - 2³ = 49743553 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (49743511) 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, 27105 + ... + 28881.

It is an arithmetic number, because the mean of its divisors is an integer number (2503424).

Almost surely, 2^49743561 is an apocalyptic number.

It is an amenable number.

49743561 is a deficient number, since it is larger than the sum of its proper divisors (30366007).

49743561 is a wasteful number, since it uses less digits than its factorization.

49743561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1861.

The product of its digits is 90720, while the sum is 39.

The square root of 49743561 is about 7052.9115264549. The cubic root of 49743561 is about 367.7722504812.

The spelling of 49743561 in words is "forty-nine million, seven hundred forty-three thousand, five hundred sixty-one".