61148137 has 4 divisors (see below), whose sum is σ = 64366480. Its totient is φ = 57929796.

The previous prime is 61148071. The next prime is 61148141. The reversal of 61148137 is 73184116.

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 a cyclic number.

It is not a de Polignac number, because 61148137 - 2²³ = 52759529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61148099 and 61148108.

It is not an unprimeable number, because it can be changed into a prime (61148147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1609143 + ... + 1609180.

It is an arithmetic number, because the mean of its divisors is an integer number (16091620).

Almost surely, 2^61148137 is an apocalyptic number.

It is an amenable number.

61148137 is a deficient number, since it is larger than the sum of its proper divisors (3218343).

61148137 is a wasteful number, since it uses less digits than its factorization.

61148137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3218342.

The product of its digits is 4032, while the sum is 31.

The square root of 61148137 is about 7819.7274249171. The cubic root of 61148137 is about 393.9681169284.

The spelling of 61148137 in words is "sixty-one million, one hundred forty-eight thousand, one hundred thirty-seven".