61435572 has 72 divisors (see below), whose sum is σ = 163111200. Its totient is φ = 17962560.

The previous prime is 61435547. The next prime is 61435597. The reversal of 61435572 is 27553416.

It is an interprime number because it is at equal distance from previous prime (61435547) and next prime (61435597).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41379 + ... + 42837.

Almost surely, 2^61435572 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61435572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81555600).

61435572 is an abundant number, since it is smaller than the sum of its proper divisors (101675628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61435572 is a wasteful number, since it uses less digits than its factorization.

61435572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1517 (or 1504 counting only the distinct ones).

The product of its digits is 25200, while the sum is 33.

The square root of 61435572 is about 7838.0847150308. The cubic root of 61435572 is about 394.5844521625.

Adding to 61435572 its reverse (27553416), we get a palindrome (88988988).

The spelling of 61435572 in words is "sixty-one million, four hundred thirty-five thousand, five hundred seventy-two".