47960021 has 4 divisors (see below), whose sum is σ = 48166092. Its totient is φ = 47753952.

The previous prime is 47959981. The next prime is 47960023. The reversal of 47960021 is 12006974.

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 16443025 + 31516996 = 4055^2 + 5614^2 .

It is a cyclic number.

It is not a de Polignac number, because 47960021 - 2⁶ = 47959957 is a prime.

It is a super-2 number, since 2×47960021² = 4600327228640882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47960023) 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, 102686 + ... + 103151.

It is an arithmetic number, because the mean of its divisors is an integer number (12041523).

Almost surely, 2^47960021 is an apocalyptic number.

It is an amenable number.

47960021 is a deficient number, since it is larger than the sum of its proper divisors (206071).

47960021 is a wasteful number, since it uses less digits than its factorization.

47960021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206070.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 47960021 is about 6925.3173934485. The cubic root of 47960021 is about 363.3231923962.

Adding to 47960021 its reverse (12006974), we get a palindrome (59966995).

The spelling of 47960021 in words is "forty-seven million, nine hundred sixty thousand, twenty-one".