65131554 has 8 divisors (see below), whose sum is σ = 130263120. Its totient is φ = 21710516.

The previous prime is 65131543. The next prime is 65131579. The reversal of 65131554 is 45513156.

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

65131554 is an admirable 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, 5427624 + ... + 5427635.

It is an arithmetic number, because the mean of its divisors is an integer number (16282890).

Almost surely, 2^65131554 is an apocalyptic number.

65131554 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65131554 is a wasteful number, since it uses less digits than its factorization.

65131554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10855264.

The product of its digits is 9000, while the sum is 30.

The square root of 65131554 is about 8070.4122571279. The cubic root of 65131554 is about 402.3436456607.

The spelling of 65131554 in words is "sixty-five million, one hundred thirty-one thousand, five hundred fifty-four".