61153465 has 4 divisors (see below), whose sum is σ = 73384164. Its totient is φ = 48922768.

The previous prime is 61153447. The next prime is 61153501. The reversal of 61153465 is 56435116.

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

It can be written as a sum of positive squares in 2 ways, for example, as 32936121 + 28217344 = 5739^2 + 5312^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61153465 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6115342 + ... + 6115351.

It is an arithmetic number, because the mean of its divisors is an integer number (18346041).

Almost surely, 2^61153465 is an apocalyptic number.

It is an amenable number.

61153465 is a deficient number, since it is larger than the sum of its proper divisors (12230699).

61153465 is a wasteful number, since it uses less digits than its factorization.

61153465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12230698.

The product of its digits is 10800, while the sum is 31.

The square root of 61153465 is about 7820.0680943327. The cubic root of 61153465 is about 393.9795590931.

The spelling of 61153465 in words is "sixty-one million, one hundred fifty-three thousand, four hundred sixty-five".