61375147 has 4 divisors (see below), whose sum is σ = 62802520. Its totient is φ = 59947776.

The previous prime is 61375141. The next prime is 61375183. The reversal of 61375147 is 74157316.

61375147 is nontrivially palindromic in base 8.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61375147 - 2⁷ = 61375019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61375141) 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, 713622 + ... + 713707.

It is an arithmetic number, because the mean of its divisors is an integer number (15700630).

Almost surely, 2^61375147 is an apocalyptic number.

61375147 is a deficient number, since it is larger than the sum of its proper divisors (1427373).

61375147 is a wasteful number, since it uses less digits than its factorization.

61375147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427372.

The product of its digits is 17640, while the sum is 34.

The square root of 61375147 is about 7834.2291899076. The cubic root of 61375147 is about 394.4550451220.

The spelling of 61375147 in words is "sixty-one million, three hundred seventy-five thousand, one hundred forty-seven".