87354021 has 4 divisors (see below), whose sum is σ = 116472032. Its totient is φ = 58236012.

The previous prime is 87354011. The next prime is 87354031. The reversal of 87354021 is 12045378.

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 an interprime number because it is at equal distance from previous prime (87354011) and next prime (87354031).

It is not a de Polignac number, because 87354021 - 2⁶ = 87353957 is a prime.

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 87354021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87354011) 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, 14559001 + ... + 14559006.

It is an arithmetic number, because the mean of its divisors is an integer number (29118008).

Almost surely, 2^87354021 is an apocalyptic number.

It is an amenable number.

87354021 is a deficient number, since it is larger than the sum of its proper divisors (29118011).

87354021 is a wasteful number, since it uses less digits than its factorization.

87354021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29118010.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 87354021 is about 9346.3373039924. The cubic root of 87354021 is about 443.7049770892.

Adding to 87354021 its reverse (12045378), we get a palindrome (99399399).

The spelling of 87354021 in words is "eighty-seven million, three hundred fifty-four thousand, twenty-one".