49971601 has 4 divisors (see below), whose sum is σ = 49986112. Its totient is φ = 49957092.

The previous prime is 49971599. The next prime is 49971613. The reversal of 49971601 is 10617994.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 49971601 - 2¹ = 49971599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49971001) 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, 1180 + ... + 10066.

It is an arithmetic number, because the mean of its divisors is an integer number (12496528).

Almost surely, 2^49971601 is an apocalyptic number.

It is an amenable number.

49971601 is a deficient number, since it is larger than the sum of its proper divisors (14511).

49971601 is an equidigital number, since it uses as much as digits as its factorization.

49971601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14510.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 49971601 is about 7069.0594140946. The cubic root of 49971601 is about 368.3333881143. Note that the first 4 decimals are identical.

The spelling of 49971601 in words is "forty-nine million, nine hundred seventy-one thousand, six hundred one".