61013253 has 8 divisors (see below), whose sum is σ = 92972608. Its totient is φ = 34864704.

The previous prime is 61013243. The next prime is 61013261. The reversal of 61013253 is 35231016.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61013253 - 2⁶ = 61013189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 2905393 = 61013253 / (6 + 1 + 0 + 1 + 3 + 2 + 5 + 3).

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61013203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1452676 + ... + 1452717.

It is an arithmetic number, because the mean of its divisors is an integer number (11621576).

Almost surely, 2^61013253 is an apocalyptic number.

It is an amenable number.

61013253 is a deficient number, since it is larger than the sum of its proper divisors (31959355).

61013253 is a wasteful number, since it uses less digits than its factorization.

61013253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2905403.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 61013253 is about 7811.0980662132. The cubic root of 61013253 is about 393.6782246596.

Adding to 61013253 its reverse (35231016), we get a palindrome (96244269).

The spelling of 61013253 in words is "sixty-one million, thirteen thousand, two hundred fifty-three".