47551501 has 4 divisors (see below), whose sum is σ = 47843392. Its totient is φ = 47259612.

The previous prime is 47551487. The next prime is 47551523. The reversal of 47551501 is 10515574.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47551501 is a prime.

It is a super-2 number, since 2×47551501² = 4522290494706002, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47551501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47551531) 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, 145701 + ... + 146026.

It is an arithmetic number, because the mean of its divisors is an integer number (11960848).

Almost surely, 2^47551501 is an apocalyptic number.

It is an amenable number.

47551501 is a deficient number, since it is larger than the sum of its proper divisors (291891).

47551501 is a wasteful number, since it uses less digits than its factorization.

47551501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291890.

The product of its (nonzero) digits is 3500, while the sum is 28.

The square root of 47551501 is about 6895.7596390826. The cubic root of 47551501 is about 362.2886625455.

The spelling of 47551501 in words is "forty-seven million, five hundred fifty-one thousand, five hundred one".