61287475 has 6 divisors (see below), whose sum is σ = 75996500. Its totient is φ = 49029960.

The previous prime is 61287467. The next prime is 61287481. The reversal of 61287475 is 57478216.

It is not a de Polignac number, because 61287475 - 2³ = 61287467 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1225725 + ... + 1225774.

Almost surely, 2^61287475 is an apocalyptic number.

61287475 is a deficient number, since it is larger than the sum of its proper divisors (14709025).

61287475 is a wasteful number, since it uses less digits than its factorization.

61287475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2451509 (or 2451504 counting only the distinct ones).

The product of its digits is 94080, while the sum is 40.

The square root of 61287475 is about 7828.6317450753. The cubic root of 61287475 is about 394.2671344114.

The spelling of 61287475 in words is "sixty-one million, two hundred eighty-seven thousand, four hundred seventy-five".