47577457 has 4 divisors (see below), whose sum is σ = 47600500. Its totient is φ = 47554416.

The previous prime is 47577427. The next prime is 47577461. The reversal of 47577457 is 75477574.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6155361 + 41422096 = 2481^2 + 6436^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47577457 is a prime.

It is a super-2 number, since 2×47577457² = 4527228829173698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47577427) 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, 8082 + ... + 12667.

It is an arithmetic number, because the mean of its divisors is an integer number (11900125).

Almost surely, 2^47577457 is an apocalyptic number.

It is an amenable number.

47577457 is a deficient number, since it is larger than the sum of its proper divisors (23043).

47577457 is a wasteful number, since it uses less digits than its factorization.

47577457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23042.

The product of its digits is 960400, while the sum is 46.

The square root of 47577457 is about 6897.6414084816. The cubic root of 47577457 is about 362.3545690109.

The spelling of 47577457 in words is "forty-seven million, five hundred seventy-seven thousand, four hundred fifty-seven".