61401451 has 4 divisors (see below), whose sum is σ = 61525000. Its totient is φ = 61277904.

The previous prime is 61401449. The next prime is 61401481. The reversal of 61401451 is 15410416.

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 61401451 - 2¹ = 61401449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61401481) 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, 61026 + ... + 62023.

It is an arithmetic number, because the mean of its divisors is an integer number (15381250).

Almost surely, 2^61401451 is an apocalyptic number.

61401451 is a deficient number, since it is larger than the sum of its proper divisors (123549).

61401451 is a wasteful number, since it uses less digits than its factorization.

61401451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123548.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 61401451 is about 7835.9077968031. The cubic root of 61401451 is about 394.5113885775.

Adding to 61401451 its reverse (15410416), we get a palindrome (76811867).

The spelling of 61401451 in words is "sixty-one million, four hundred one thousand, four hundred fifty-one".