3887212501 has 4 divisors (see below), whose sum is σ = 3982022604. Its totient is φ = 3792402400.

The previous prime is 3887212493. The next prime is 3887212507. The reversal of 3887212501 is 1052127883.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1052127883 = 557 ⋅1888919.

It can be written as a sum of positive squares in 2 ways, for example, as 1810587601 + 2076624900 = 42551^2 + 45570^2 .

It is a cyclic number.

It is not a de Polignac number, because 3887212501 - 2³ = 3887212493 is a prime.

It is a super-2 number, since 2×3887212501² = 30220842055861350002, 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 (3887212507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47404990 + ... + 47405071.

It is an arithmetic number, because the mean of its divisors is an integer number (995505651).

Almost surely, 2^3887212501 is an apocalyptic number.

It is an amenable number.

3887212501 is a deficient number, since it is larger than the sum of its proper divisors (94810103).

3887212501 is an equidigital number, since it uses as much as digits as its factorization.

3887212501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94810102.

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 3887212501 is about 62347.5139921393. The cubic root of 3887212501 is about 1572.3386651990.

The spelling of 3887212501 in words is "three billion, eight hundred eighty-seven million, two hundred twelve thousand, five hundred one".