49520661 has 16 divisors (see below), whose sum is σ = 69975360. Its totient is φ = 31095680.

The previous prime is 49520651. The next prime is 49520663. The reversal of 49520661 is 16602594.

It is a cyclic number.

It is not a de Polignac number, because 49520661 - 2⁵ = 49520629 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49520663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3375 + ... + 10508.

It is an arithmetic number, because the mean of its divisors is an integer number (4373460).

Almost surely, 2^49520661 is an apocalyptic number.

49520661 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

49520661 is a deficient number, since it is larger than the sum of its proper divisors (20454699).

49520661 is a wasteful number, since it uses less digits than its factorization.

49520661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13956.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 49520661 is about 7037.0917998844. The cubic root of 49520661 is about 367.2221009832. Note that the first 3 decimals are identical.

It can be divided in two parts, 49 and 520661, that added together give a triangular number (520710 = T₁₀₂₀).

The spelling of 49520661 in words is "forty-nine million, five hundred twenty thousand, six hundred sixty-one".