42651253 has 2 divisors, whose sum is σ = 42651254. Its totient is φ = 42651252.

The previous prime is 42651233. The next prime is 42651281. The reversal of 42651253 is 35215624.

It is an a-pointer prime, because the next prime (42651281) can be obtained adding 42651253 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41447844 + 1203409 = 6438^2 + 1097^2 .

It is a cyclic number.

It is not a de Polignac number, because 42651253 - 2²⁵ = 9096821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42651233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21325626 + 21325627.

It is an arithmetic number, because the mean of its divisors is an integer number (21325627).

Almost surely, 2^42651253 is an apocalyptic number.

It is an amenable number.

42651253 is a deficient number, since it is larger than the sum of its proper divisors (1).

42651253 is an equidigital number, since it uses as much as digits as its factorization.

42651253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 28.

The square root of 42651253 is about 6530.7926777689. The cubic root of 42651253 is about 349.3901024574.

Adding to 42651253 its reverse (35215624), we get a palindrome (77866877).

The spelling of 42651253 in words is "forty-two million, six hundred fifty-one thousand, two hundred fifty-three".