49721534 has 4 divisors (see below), whose sum is σ = 74582304. Its totient is φ = 24860766.

The previous prime is 49721531. The next prime is 49721563. The reversal of 49721534 is 43512794.

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

It is a junction number, because it is equal to n+sod(n) for n = 49721494 and 49721503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49721531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12430382 + ... + 12430385.

It is an arithmetic number, because the mean of its divisors is an integer number (18645576).

Almost surely, 2^49721534 is an apocalyptic number.

49721534 is a deficient number, since it is larger than the sum of its proper divisors (24860770).

49721534 is a wasteful number, since it uses less digits than its factorization.

49721534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24860769.

The product of its digits is 30240, while the sum is 35.

The square root of 49721534 is about 7051.3497998610. The cubic root of 49721534 is about 367.7179579241.

The spelling of 49721534 in words is "forty-nine million, seven hundred twenty-one thousand, five hundred thirty-four".