61451023 has 4 divisors (see below), whose sum is σ = 61601680. Its totient is φ = 61300368.

The previous prime is 61451017. The next prime is 61451041. The reversal of 61451023 is 32015416.

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 61451023 - 2¹³ = 61442831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61450985 and 61451003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61451323) 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, 74715 + ... + 75532.

It is an arithmetic number, because the mean of its divisors is an integer number (15400420).

Almost surely, 2^61451023 is an apocalyptic number.

61451023 is a deficient number, since it is larger than the sum of its proper divisors (150657).

61451023 is a wasteful number, since it uses less digits than its factorization.

61451023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150656.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 61451023 is about 7839.0702892626. The cubic root of 61451023 is about 394.6175286204.

Adding to 61451023 its reverse (32015416), we get a palindrome (93466439).

The spelling of 61451023 in words is "sixty-one million, four hundred fifty-one thousand, twenty-three".