61429851 has 24 divisors (see below), whose sum is σ = 102317280. Its totient is φ = 34788096.

The previous prime is 61429829. The next prime is 61429853. The reversal of 61429851 is 15892416.

It is not a de Polignac number, because 61429851 - 2⁷ = 61429723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61429853) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2805 + ... + 11433.

It is an arithmetic number, because the mean of its divisors is an integer number (4263220).

Almost surely, 2^61429851 is an apocalyptic number.

61429851 is a deficient number, since it is larger than the sum of its proper divisors (40887429).

61429851 is a wasteful number, since it uses less digits than its factorization.

61429851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8755 (or 8752 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 61429851 is about 7837.7197576846. The cubic root of 61429851 is about 394.5722036250.

The spelling of 61429851 in words is "sixty-one million, four hundred twenty-nine thousand, eight hundred fifty-one".