47551393 has 4 divisors (see below), whose sum is σ = 47576880. Its totient is φ = 47525908.

The previous prime is 47551381. The next prime is 47551409. The reversal of 47551393 is 39315574.

47551393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 an emirpimes, since its reverse is a distinct semiprime: 39315574 = 2 ⋅19657787.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47551393 is a prime.

It is a super-2 number, since 2×47551393² = 4522269952480898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47551333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9703 + ... + 13756.

It is an arithmetic number, because the mean of its divisors is an integer number (11894220).

Almost surely, 2^47551393 is an apocalyptic number.

It is an amenable number.

47551393 is a deficient number, since it is larger than the sum of its proper divisors (25487).

47551393 is a wasteful number, since it uses less digits than its factorization.

47551393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25486.

The product of its digits is 56700, while the sum is 37.

The square root of 47551393 is about 6895.7518081787. The cubic root of 47551393 is about 362.2883882660.

The spelling of 47551393 in words is "forty-seven million, five hundred fifty-one thousand, three hundred ninety-three".