61202551 has 4 divisors (see below), whose sum is σ = 62856712. Its totient is φ = 59548392.

The previous prime is 61202527. The next prime is 61202569. The reversal of 61202551 is 15520216.

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

It is not a de Polignac number, because 61202551 - 2¹⁹ = 60678263 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 (61202501) 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, 827025 + ... + 827098.

It is an arithmetic number, because the mean of its divisors is an integer number (15714178).

Almost surely, 2^61202551 is an apocalyptic number.

61202551 is a deficient number, since it is larger than the sum of its proper divisors (1654161).

61202551 is a wasteful number, since it uses less digits than its factorization.

61202551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1654160.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 61202551 is about 7823.2059285181. The cubic root of 61202551 is about 394.0849426485.

Adding to 61202551 its reverse (15520216), we get a palindrome (76722767).

The spelling of 61202551 in words is "sixty-one million, two hundred two thousand, five hundred fifty-one".