87270457 has 4 divisors (see below), whose sum is σ = 89629156. Its totient is φ = 84911760.

The previous prime is 87270413. The next prime is 87270473. The reversal of 87270457 is 75407278.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75407278 = 2 ⋅37703639.

It can be written as a sum of positive squares in 2 ways, for example, as 76108176 + 11162281 = 8724^2 + 3341^2 .

It is a cyclic number.

It is not a de Polignac number, because 87270457 - 2¹¹ = 87268409 is a prime.

It is a super-2 number, since 2×87270457² = 15232265329977698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87070457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1179294 + ... + 1179367.

It is an arithmetic number, because the mean of its divisors is an integer number (22407289).

Almost surely, 2^87270457 is an apocalyptic number.

It is an amenable number.

87270457 is a deficient number, since it is larger than the sum of its proper divisors (2358699).

87270457 is a wasteful number, since it uses less digits than its factorization.

87270457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2358698.

The product of its (nonzero) digits is 109760, while the sum is 40.

The square root of 87270457 is about 9341.8658200597. The cubic root of 87270457 is about 443.5634472867.

The spelling of 87270457 in words is "eighty-seven million, two hundred seventy thousand, four hundred fifty-seven".