87125479 has 6 divisors (see below), whose sum is σ = 101350104. Its totient is φ = 74678940.

The previous prime is 87125473. The next prime is 87125501. The reversal of 87125479 is 97452178.

It is not a de Polignac number, because 87125479 - 2³ = 87125471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87125471) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 888987 + ... + 889084.

It is an arithmetic number, because the mean of its divisors is an integer number (16891684).

Almost surely, 2^87125479 is an apocalyptic number.

87125479 is a deficient number, since it is larger than the sum of its proper divisors (14224625).

87125479 is a wasteful number, since it uses less digits than its factorization.

87125479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1778085 (or 1778078 counting only the distinct ones).

The product of its digits is 141120, while the sum is 43.

The square root of 87125479 is about 9334.1030099308. The cubic root of 87125479 is about 443.3176879674.

The spelling of 87125479 in words is "eighty-seven million, one hundred twenty-five thousand, four hundred seventy-nine".