740310253 has 4 divisors (see below), whose sum is σ = 740364928. Its totient is φ = 740255580.

The previous prime is 740310251. The next prime is 740310293. The reversal of 740310253 is 352013047.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 352013047 = 6917 ⋅50891.

It is a cyclic number.

It is not a de Polignac number, because 740310253 - 2¹ = 740310251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (740310251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9700 + ... + 39682.

It is an arithmetic number, because the mean of its divisors is an integer number (185091232).

Almost surely, 2^740310253 is an apocalyptic number.

It is an amenable number.

740310253 is a deficient number, since it is larger than the sum of its proper divisors (54675).

740310253 is a wasteful number, since it uses less digits than its factorization.

740310253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54674.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 740310253 is about 27208.6429834345. The cubic root of 740310253 is about 904.6305597064.

The spelling of 740310253 in words is "seven hundred forty million, three hundred ten thousand, two hundred fifty-three".