87403545 has 48 divisors (see below), whose sum is σ = 163127952. Its totient is φ = 43130880.

The previous prime is 87403543. The next prime is 87403567. The reversal of 87403545 is 54530478.

It can be written as a sum of positive squares in 8 ways, for example, as 22810176 + 64593369 = 4776^2 + 8037^2 .

It is not a de Polignac number, because 87403545 - 2¹ = 87403543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87403543) 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 47 ways as a sum of consecutive naturals, for example, 45729 + ... + 47601.

It is an arithmetic number, because the mean of its divisors is an integer number (3398499).

Almost surely, 2^87403545 is an apocalyptic number.

87403545 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

87403545 is a deficient number, since it is larger than the sum of its proper divisors (75724407).

87403545 is a wasteful number, since it uses less digits than its factorization.

87403545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1962 (or 1959 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 87403545 is about 9348.9863086861. The cubic root of 87403545 is about 443.7888117875.

The spelling of 87403545 in words is "eighty-seven million, four hundred three thousand, five hundred forty-five".