61473137 has 4 divisors (see below), whose sum is σ = 67061616. Its totient is φ = 55884660.

The previous prime is 61473131. The next prime is 61473143. The reversal of 61473137 is 73137416.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (61473131) and next prime (61473143).

It is a cyclic number.

It is not a de Polignac number, because 61473137 - 2⁸ = 61472881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61473131) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2794223 + ... + 2794244.

It is an arithmetic number, because the mean of its divisors is an integer number (16765404).

Almost surely, 2^61473137 is an apocalyptic number.

It is an amenable number.

61473137 is a deficient number, since it is larger than the sum of its proper divisors (5588479).

61473137 is a wasteful number, since it uses less digits than its factorization.

61473137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5588478.

The product of its digits is 10584, while the sum is 32.

The square root of 61473137 is about 7840.4806612860. The cubic root of 61473137 is about 394.6648591340.

The spelling of 61473137 in words is "sixty-one million, four hundred seventy-three thousand, one hundred thirty-seven".