651354155 has 4 divisors (see below), whose sum is σ = 781624992. Its totient is φ = 521083320.

The previous prime is 651354149. The next prime is 651354199. The reversal of 651354155 is 551453156.

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

It is not a de Polignac number, because 651354155 - 2¹² = 651350059 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65135411 + ... + 65135420.

It is an arithmetic number, because the mean of its divisors is an integer number (195406248).

Almost surely, 2^651354155 is an apocalyptic number.

651354155 is a deficient number, since it is larger than the sum of its proper divisors (130270837).

651354155 is a wasteful number, since it uses less digits than its factorization.

651354155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130270836.

The product of its digits is 45000, while the sum is 35.

The square root of 651354155 is about 25521.6409151136. The cubic root of 651354155 is about 866.8402378361.

Subtracting from 651354155 its reverse (551453156), we obtain a palindrome (99900999).

The spelling of 651354155 in words is "six hundred fifty-one million, three hundred fifty-four thousand, one hundred fifty-five".