75485553 has 32 divisors (see below), whose sum is σ = 119024640. Its totient is φ = 41951040.

The previous prime is 75485533. The next prime is 75485561. The reversal of 75485553 is 35558457.

It is not a de Polignac number, because 75485553 - 2¹³ = 75477361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75485533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76300 + ... + 77282.

It is an arithmetic number, because the mean of its divisors is an integer number (3719520).

Almost surely, 2^75485553 is an apocalyptic number.

It is an amenable number.

75485553 is a deficient number, since it is larger than the sum of its proper divisors (43539087).

75485553 is a wasteful number, since it uses less digits than its factorization.

75485553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189.

The product of its digits is 420000, while the sum is 42.

The square root of 75485553 is about 8688.2422272863. The cubic root of 75485553 is about 422.6244452109.

The spelling of 75485553 in words is "seventy-five million, four hundred eighty-five thousand, five hundred fifty-three".