245155015531 has 4 divisors (see below), whose sum is σ = 247085370112. Its totient is φ = 243224660952.

The previous prime is 245155015519. The next prime is 245155015577. The reversal of 245155015531 is 135510551542.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 245155015531 - 2¹¹ = 245155013483 is a prime.

It is a super-2 number, since 2×245155015531² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245155015631) 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, 965177100 + ... + 965177353.

It is an arithmetic number, because the mean of its divisors is an integer number (61771342528).

Almost surely, 2^245155015531 is an apocalyptic number.

245155015531 is a deficient number, since it is larger than the sum of its proper divisors (1930354581).

245155015531 is a wasteful number, since it uses less digits than its factorization.

245155015531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1930354580.

The product of its (nonzero) digits is 75000, while the sum is 37.

The spelling of 245155015531 in words is "two hundred forty-five billion, one hundred fifty-five million, fifteen thousand, five hundred thirty-one".