49001643 has 6 divisors (see below), whose sum is σ = 70780164. Its totient is φ = 32667756.

The previous prime is 49001611. The next prime is 49001651. The reversal of 49001643 is 34610094.

It is not a de Polignac number, because 49001643 - 2⁵ = 49001611 is a prime.

It is a super-2 number, since 2×49001643² = 4802322033398898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (49001663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2722305 + ... + 2722322.

It is an arithmetic number, because the mean of its divisors is an integer number (11796694).

Almost surely, 2^49001643 is an apocalyptic number.

49001643 is a deficient number, since it is larger than the sum of its proper divisors (21778521).

49001643 is a wasteful number, since it uses less digits than its factorization.

49001643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5444633 (or 5444630 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 49001643 is about 7000.1173561591. The cubic root of 49001643 is about 365.9346609153.

The spelling of 49001643 in words is "forty-nine million, one thousand, six hundred forty-three".