49021143 has 4 divisors (see below), whose sum is σ = 65361528. Its totient is φ = 32680760.

The previous prime is 49021139. The next prime is 49021157. The reversal of 49021143 is 34112094.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 49021143 - 2² = 49021139 is a prime.

It is a super-2 number, since 2×49021143² = 4806144922052898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49021043) 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, 8170188 + ... + 8170193.

It is an arithmetic number, because the mean of its divisors is an integer number (16340382).

Almost surely, 2^49021143 is an apocalyptic number.

49021143 is a deficient number, since it is larger than the sum of its proper divisors (16340385).

49021143 is a wasteful number, since it uses less digits than its factorization.

49021143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16340384.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 49021143 is about 7001.5100514103. The cubic root of 49021143 is about 365.9831952032.

The spelling of 49021143 in words is "forty-nine million, twenty-one thousand, one hundred forty-three".