61433251 has 16 divisors (see below), whose sum is σ = 70957440. Its totient is φ = 52600320.

The previous prime is 61433249. The next prime is 61433263. The reversal of 61433251 is 15233416.

It is a cyclic number.

It is not a de Polignac number, because 61433251 - 2¹ = 61433249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61433651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39576 + ... + 41098.

It is an arithmetic number, because the mean of its divisors is an integer number (4434840).

Almost surely, 2^61433251 is an apocalyptic number.

61433251 is a deficient number, since it is larger than the sum of its proper divisors (9524189).

61433251 is a wasteful number, since it uses less digits than its factorization.

61433251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1746.

The product of its digits is 2160, while the sum is 25.

The square root of 61433251 is about 7837.9366545029. The cubic root of 61433251 is about 394.5794830432.

Adding to 61433251 its reverse (15233416), we get a palindrome (76666667).

The spelling of 61433251 in words is "sixty-one million, four hundred thirty-three thousand, two hundred fifty-one".