87971053 has 4 divisors (see below), whose sum is σ = 87997888. Its totient is φ = 87944220.

The previous prime is 87971041. The next prime is 87971057. The reversal of 87971053 is 35017978.

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 not a de Polignac number, because 87971053 - 2¹⁷ = 87839981 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87970997 and 87971015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87971057) 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, 7683 + ... + 15328.

It is an arithmetic number, because the mean of its divisors is an integer number (21999472).

Almost surely, 2^87971053 is an apocalyptic number.

It is an amenable number.

87971053 is a deficient number, since it is larger than the sum of its proper divisors (26835).

87971053 is a wasteful number, since it uses less digits than its factorization.

87971053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26834.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 87971053 is about 9379.2885124619. The cubic root of 87971053 is about 444.7472418928.

The spelling of 87971053 in words is "eighty-seven million, nine hundred seventy-one thousand, fifty-three".