51151553 has 16 divisors (see below), whose sum is σ = 55619520. Its totient is φ = 46884096.

The previous prime is 51151547. The next prime is 51151561. The reversal of 51151553 is 35515115.

It is not a de Polignac number, because 51151553 - 2⁴ = 51151537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51151523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111701 + ... + 112157.

It is an arithmetic number, because the mean of its divisors is an integer number (3476220).

Almost surely, 2^51151553 is an apocalyptic number.

It is an amenable number.

51151553 is a deficient number, since it is larger than the sum of its proper divisors (4467967).

51151553 is a wasteful number, since it uses less digits than its factorization.

51151553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656.

The product of its digits is 1875, while the sum is 26.

The square root of 51151553 is about 7152.0313897521. The cubic root of 51151553 is about 371.2099493879.

Adding to 51151553 its reverse (35515115), we get a palindrome (86666668).

The spelling of 51151553 in words is "fifty-one million, one hundred fifty-one thousand, five hundred fifty-three".