61149475 has 6 divisors (see below), whose sum is σ = 75825380. Its totient is φ = 48919560.

The previous prime is 61149469. The next prime is 61149509. The reversal of 61149475 is 57494116.

It is not a de Polignac number, because 61149475 - 2¹⁷ = 61018403 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1222965 + ... + 1223014.

Almost surely, 2^61149475 is an apocalyptic number.

61149475 is a deficient number, since it is larger than the sum of its proper divisors (14675905).

61149475 is a wasteful number, since it uses less digits than its factorization.

61149475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2445989 (or 2445984 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The square root of 61149475 is about 7819.8129773032. The cubic root of 61149475 is about 393.9709904174.

It can be divided in two parts, 611 and 49475, that added together give a triangular number (50086 = T₃₁₆).

The spelling of 61149475 in words is "sixty-one million, one hundred forty-nine thousand, four hundred seventy-five".